as used herein , a “ mattress ” is meant to encompass any cushioned sleeping pad , where the sleeping pad can be filled with resilient material , such as cotton , feathers , foam rubber , or can have one or more springs , as in a common mattress of a bed , or can be filled with water or air . as used herein , a “ mattress ” is meant to encompass different sized mattresses , such as crib size , twin size , full size , queen size and king size , as well as mattresses of different thickness , such as bassinet pads , crib mattresses and up to king size mattresses . fig1 - 2 show one embodiment of a bed sheet 100 . the bed sheet 100 can have a top layer 10 generally sized to extend along a length l and width w of a mattress 200 ( see fig1 ). the top layer 10 can at least partially define a sleeping garment 60 , which is further described below . the top layer 10 is attached to a bottom layer 20 ( see fig1 ) so as to define a pocket or cavity 30 therebetween into which a wearer of the sleeping garment can at least partially extend . in the illustrated embodiment , the top layer 10 is generally co - extensive with the bottom layer 20 . however , in other embodiments , the bottom layer 20 can extend over a larger area than the top layer 10 . in the illustrated embodiment , the top layer 10 is sewn to the bottom layer 20 along at least a portion of the periphery of the top layer 10 . in one embodiment , the periphery of the top layer 10 is sized to substantially correspond to the periphery of a top surface 210 of the mattress 200 ( see fig1 ) on which the top layer 10 rests . in another embodiment , the periphery of the top layer 10 is larger than the periphery that defines the top surface 210 of the mattress 200 so that the top layer 10 extends past the edges of said top surface and onto a side surface 220 of said mattress 200 . the bed sheet 100 can optionally include a generally water - resistant layer or water proof layer 40 disposed below the bottom layer 20 , so that the waterproof layer 40 is adjacent and in contact with the mattress 200 when the sheet 100 is placed on the mattress 200 , and so the bottom layer 20 is disposed between the waterproof layer 40 and the top layer 10 . in one embodiment , the top layer 10 is generally co - extensive with the bottom layer 20 and the waterproof layer 40 , and the three layers 10 , 20 , 40 are sewn together along at least a portion of the periphery of the top layer 10 . in one embodiment , the waterproof layer 40 extends along an area smaller than the top layer 10 , where the waterproof layer 40 extends along substantially the top surface 210 of the mattress 200 . in another embodiment , the waterproof layer 40 can extend along the same area as the top layer 10 , and can extend to the sides 220 or underside surface 230 of the mattress 200 . advantageously , the waterproof layer 40 can at least partially stick or adhere to the mattress 200 during use ( e . g ., due to the affinity between the mattress material and material of the waterproof layer 40 ), which advantageously helps to maintain the bed sheet 100 in place on the mattress 200 and inhibits dislodgement of the sheet 100 during use ( e . g ., due to the user moving around , sitting up or standing up ). in another embodiment , the water proof layer 40 can be excluded from the bed sheet 100 . in one embodiment , where the water proof layer 40 is excluded from the bed sheet 100 , the bottom layer 20 can be water resistant or water proof . in one embodiment , the top layer 10 can be made of a breathable fabric , such as cotton . however , in other embodiments , the top layer 10 can be of a stretchable material , such as 100 % jersey cotton stretch material , which advantageously allows the user to comfortably move while having the sleeping garment 60 on . however , in other embodiments , the top layer 10 can be made of other suitable fabrics or textiles , including those made from natural or synthetic fibers ( e . g ., polyester ). in one embodiment , the bottom layer 20 can be made of fabric . for example , in one embodiment , the bottom layer 20 can be made of 100 % cotton flannel . however , in other embodiments , the top layer 10 can be made of other suitable fabrics or textiles , including those made from natural or synthetic fibers ( e . g ., polyester , terrycloth , bamboo ). in one embodiment , the waterproof layer 40 can be made of a polymer material , such as plastic or vinyl coated polyester . however , in other embodiments , the waterproof layer 40 can be made of other suitable materials , such as a plastic material ( e . g ., natural , synthetic or semi - synthetic plastic material ). the bed sheet 100 can have a side portion 50 configured to extend from the top layer 10 , along the sides 220 of the mattress 200 and to an underside 230 of the mattress 200 . in one embodiment , the side portion 50 and top layer 10 are one piece . in another embodiment , the side portion 50 and top layer 10 are separate pieces that are sewn together at said periphery . in one embodiment , the side portion 50 can be made of the same material as the top layer 10 . in another embodiment , the side portion 50 can be made of a different material than the top layer 10 . the side portion 50 can extend to the underside 230 of the mattress 200 and define an edge 52 ( see fig1 ). a resilient ( e . g ., elastic ) band 54 can optionally be attached to at least a portion of said edge 52 or be integrated in the edge 52 ( e . g ., the side portion 50 can overlap the band 54 at said edge 52 so as to enclose the band 54 ). in the illustrated embodiment , the elastic band 54 can extend along the entire edge 52 . in one embodiment , the band 54 can have a generally oval shape when in the relaxed or unstretched condition . advantageously , the band 54 substantially maintains the sheet 100 in place on the mattress 200 and inhibits the sheet 100 from dislodging or coming off the mattress 200 during use of the sheet 100 by a user , as further discussed below . in one embodiment , the band 54 has a thickness 54 t of about three inches . however , in other embodiments , the thickness 54 t can be less than or greater than three inches . with continued reference to fig1 - 2 , a garment 60 can be integrated into the bed sheet 100 so that the garment 60 and top layer 10 are a single piece . in the illustrated embodiment , the garment 60 is a swaddle with two portions 61 a , 61 b ( e . g ., two halves ) that wrap around the baby or infant &# 39 ; s torso and lower body so that the baby &# 39 ; s or infant &# 39 ; s arms are completely enclosed by the two portions 61 a , 61 b of the swaddle garment 60 . the two portions 61 a , 61 b can attach to each other , or to another portion of the garment 60 or top layer 10 with one or more fasteners . in one embodiment , the one or more fasteners can be hook and loop fasteners ( e . g ., velcro ® or aplix ™). in another embodiment , the one or more fasteners can include one or more snaps . in still another embodiment , the one or more fasteners can include one or more zippers or buttons and button holes . the sleeping garment 60 can optionally have a waist band of a resilient and stretchable material . in use , the baby or infant can be placed in the pocket or cavity 30 of the bed sheet 100 and the two portions 61 a , 61 b of the swaddle garment 60 wrapped around the baby &# 39 ; s or infant &# 39 ; s torso so that his or her arms are completely covered by the swaddle portions 61 a , 61 b . fig3 - 9 show another embodiment of a garment 60 a integrated with the bed sheet 100 . the garment 60 a is similar to the garment 60 shown in fig1 - 2 , except as noted below . thus , the reference numerals used to designate the various components of the garment 60 a are identical to those used for identifying the corresponding components of the garment 60 in fig1 - 2 , except that the reference numerals of the garment 60 a end with an “ a ”. therefore the description for the various components of the garment 60 shown in fig1 - 2 is understood to apply to the corresponding components of the garment 60 a in fig3 - 9 , except as described below . as shown in fig3 - 9 , the garment 60 a is a swaddle with two swaddle portions 61 a , 61 b ( e . g ., swaddle halves ) that wrap at least partially around the torso of the baby or infant , and which fasten to each other or to another portion of the garment 60 a or top layer 10 with one or more fasteners . as discussed above , the one or more fasteners can be hook and loop fasteners ( e . g ., velcro ® or aplix ™). in another embodiment , the one or more fasteners can include one or more snaps . in still another embodiment , the one or more fasteners can include one or more zippers or buttons and button holes . the garment 60 a also has two flaps 63 a , 63 b that can be pulled to uncover corresponding openings 65 a , 65 b . in the illustrated embodiment , the openings 65 a , 65 b are sized to allow at least a portion of the baby &# 39 ; s or infant &# 39 ; s hand or arm to pass therethrough . in another embodiment , the openings 65 a , 65 b can be sized to not allow the baby &# 39 ; s hands or arms to pass therethrough , but to allow access to a portion of the baby &# 39 ; s hand or arm ( e . g ., to connect an iv line , as discussed further below ). the flaps 63 a , 63 b can removably close the openings 65 a , 65 b via fasteners 67 b on the flap 63 b that releasably attach to fasteners 69 b on the opening . the fasteners 67 b , 69 b can be hook and loop fasteners ( e . g ., velcro ® or aplix ™), though other suitable fasteners can be used . in the illustrated embodiment , the openings 65 a , 65 b are located on the swaddle portions 61 a , 61 b at a location that allows a portion of the baby &# 39 ; s or infant &# 39 ; s arms to pass through the opening , but lower than openings for sleeves would normally be ( e . g ., in a garment that has sleeves or openings that align with the baby &# 39 ; s or infant &# 39 ; s shoulders ). this allows the swaddle garment 60 a to maintain the baby &# 39 ; s or infant &# 39 ; s shoulders and upper arms wrapped and swaddled . advantageously , the flaps 63 a , 63 b and openings 65 a , 65 b allow access to the baby &# 39 ; s arms , which can allow a caregiver , nurse or doctor to access the baby &# 39 ; s arms , such as to check their pulse or to apply an iv ( e . g ., intravenous fluid delivery ). as shown in fig3 - 4 , one flap 63 b can be open to allow access to the baby &# 39 ; s left arm , while the other flap 63 a can be closed . in another embodiment , shown in fig8 , the second flap 63 a can be opened to allow access to the baby &# 39 ; s other arm through the opening 65 a . in still another embodiment , shown in fig9 , the flap 63 b can be partially closed ( via the fasteners 67 b , 69 b ) to hold the baby &# 39 ; s hand in place , for example , after an iv line has been attached to the baby &# 39 ; s arm . though the garment 60 a only shows two flaps 63 b , 65 b , one of skill in the art will recognize that the garment 60 a can in one embodiment only have one flap and corresponding opening . in another embodiment , the garment 60 a can have one or two additional flaps over openings located further down on the garment 60 a to allow access to the baby &# 39 ; s or infant &# 39 ; s legs or feet . although this invention has been disclosed in the context of certain preferred embodiments and examples , it will be understood by those skilled in the art that the present invention extends beyond the specifically disclosed embodiments to other alternative embodiments and / or uses of the invention and obvious modifications and equivalents thereof . in addition , while a number of variations of the invention have been shown and described in detail , other modifications , which are within the scope of this invention , will be readily apparent to those of skill in the art based upon this disclosure . it is also contemplated that various combinations or sub - combinations of the specific features and aspects of the embodiments may be made and still fall within the scope of the invention . accordingly , it should be understood that various features and aspects of the disclosed embodiments can be combined with or substituted for one another in order to form varying modes of the disclosed invention . thus , it is intended that the scope of the present invention herein disclosed should not be limited by the particular disclosed embodiments described above . features , materials , characteristics , or groups described in conjunction with a particular aspect , embodiment , or example are to be understood to be applicable to any other aspect , embodiment or example described in this section or elsewhere in this specification unless incompatible therewith . all of the features disclosed in this specification ( including any accompanying claims , abstract and drawings ), and / or all of the steps of any method or process so disclosed , may be combined in any combination , except combinations where at least some of such features and / or steps are mutually exclusive . the protection is not restricted to the details of any foregoing embodiments . the protection extends to any novel one , or any novel combination , of the features disclosed in this specification ( including any accompanying claims , abstract and drawings ), or to any novel one , or any novel combination , of the steps of any method or process so disclosed . furthermore , certain features that are described in this disclosure in the context of separate implementations can also be implemented in combination in a single implementation . conversely , various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination . moreover , although features may be described above as acting in certain combinations , one or more features from a claimed combination can , in some cases , be excised from the combination , and the combination may be claimed as a subcombination or variation of a sub combination . moreover , while operations may be depicted in the drawings or described in the specification in a particular order , such operations need not be performed in the particular order shown or in sequential order , or that all operations be performed , to achieve desirable results . other operations that are not depicted or described can be incorporated in the example methods and processes . for example , one or more additional operations can be performed before , after , simultaneously , or between any of the described operations . further , the operations may be rearranged or reordered in other implementations . those skilled in the art will appreciate that in some embodiments , the actual steps taken in the processes illustrated and / or disclosed may differ from those shown in the figures . depending on the embodiment , certain of the steps described above may be removed , others may be added . furthermore , the features and attributes of the specific embodiments disclosed above may be combined in different ways to form additional embodiments , all of which fall within the scope of the present disclosure . also , the separation of various system components in the implementations described above should not be understood as requiring such separation in all implementations , and it should be understood that the described components and systems can generally be integrated together in a single product or packaged into multiple products . for purposes of this disclosure , certain aspects , advantages , and novel features are described herein . not necessarily all such advantages may be achieved in accordance with any particular embodiment . thus , for example , those skilled in the art will recognize that the disclosure may be embodied or carried out in a manner that achieves one advantage or a group of advantages as taught herein without necessarily achieving other advantages as may be taught or suggested herein . conditional language , such as “ can ,” “ could ,” “ might ,” or “ may ,” unless specifically stated otherwise , or otherwise understood within the context as used , is generally intended to convey that certain embodiments include , while other embodiments do not include , certain features , elements , and / or steps . thus , such conditional language is not generally intended to imply that features , elements , and / or steps are in any way required for one or more embodiments or that one or more embodiments necessarily include logic for deciding , with or without user input or prompting , whether these features , elements , and / or steps are included or are to be performed in any particular embodiment . conjunctive language such as the phrase “ at least one of x , y , and z ,” unless specifically stated otherwise , is otherwise understood with the context as used in general to convey that an item , term , etc . may be either x , y , or z . thus , such conjunctive language is not generally intended to imply that certain embodiments require the presence of at least one of x , at least one of y , and at least one of z . language of degree used herein , such as the terms “ approximately ,” “ about ,” “ generally ,” and “ substantially ” as used herein represent a value , amount , or characteristic close to the stated value , amount , or characteristic that still performs a desired function or achieves a desired result . for example , the terms “ approximately ”, “ about ”, “ generally ,” and “ substantially ” may refer to an amount that is within less than 10 % of , within less than 5 % of , within less than 1 % of , within less than 0 . 1 % of , and within less than 0 . 01 % of the stated amount . as another example , in certain embodiments , the terms “ generally parallel ” and “ substantially parallel ” refer to a value , amount , or characteristic that departs from exactly parallel by less than or equal to 15 degrees , 10 degrees , 5 degrees , 3 degrees , 1 degree , or 0 . 1 degree . the scope of the present disclosure is not intended to be limited by the specific disclosures of preferred embodiments in this section or elsewhere in this specification , and may be defined by claims as presented in this section or elsewhere in this specification or as presented in the future . the language of the claims is to be interpreted broadly based on the language employed in the claims and not limited to the examples described in the present specification or during the prosecution of the application , which examples are to be construed as non - exclusive .
a bedsheet with an integrated swaddle garment can hold babies securely while allowing access to the baby for examination and / or medical procedures without having to take the baby out of the garment . the bedsheet can be fitted over a mattress and the baby can be placed in a cavity or pocket in the blanket and portions of the garment fastened to secure the baby or infant within the garment .