this be a fantastic product and I highly recommend it . we recently transition from swaddle we little one to use this . he basically outgrow the swaddling and be get he arm free within seconds . it seem he like he arm loose , but of course we want he leg cover to keep he warm . on the other hand we be still afraid to use a blanket because he be still a bit young . this sleepsack be we answer . we use it with long sleeve onesy and it keep we little one warm , cozy and safe . the material be soft after a few washing and the construction be solid as well . buy this product without any fear .