GoodNites

GoodNites (Formerly Pull-Ups Goodnites) (Known as DryNites in the UK and some other countries) are pull-ups designed for managing nocturnal enuresis. 
GoodNites are designed to be worn to bed in order to prevent wetting of the sheets and pajamas in case of an accident. GoodNites are pull-up style rather than diaper-style to make it easier for children experiencing nocturnal enuresis to change on their own. 
GoodNites serves as the middle level of incontinence products in Kimberly-Clark's line. Huggies diapers are marketed for babies. Pull-Ups training pants are marketed for toddlers. Depend undergarments are marketed to older adults.
Product History.
Early Designs.
Prior to 2004, GoodNites were unisex, plain-white pull-ups with only a faux tag printed on the back.
The original GoodNites were released in 1994. They came in two sizes: medium (45-65 lbs) and large (65-85 lbs). In 1999, Kimberly-Clark introduced a new extra-large size (85 lbs-125 lbs and up). 
Big Changes.
In 2001, a "Cloth-Like Cover" replaced the previous cover. In 2003, Kimberly-Clark introduced the "Trim-Fit" style (a drastic reduction in padding thickness and the overall size of the pull-up). In 2004, Kimberly-Clark introduced gender-specific GoodNites with absorbency zoned for boys and girls. Medium GoodNites became small/medium and were designed to fit kids 38-65 pounds. Large and extra large GoodNites were combined into large/extra-Large for kids from 60-125+ pounds (Height for healthy weight of 125 pounds is 4' 11" up to 5' 8" (The CDC states that the Average Height for Men is 69in or 5' 9" with an average waist size of 40.3in while the Average for Women is 63.6in or 5' 3.6" with the average waist size of 38.7in)). The small/medium size is the equivalent of size 4-8 underwear (Size 8 US is 23.5in Waist). The large/extra-large size is equivalent to size 8-14 underwear (Size 14 US is 27in Waist). 
In 2017, a new extra-small size was introduced for both boys and girls. It fits clothing sizes 3-5 and is designed for children weighing 28-45 lbs.
In 2019, GoodNites has updated the logo online and is stating "New Look, Coming Soon The same protection you trust, with brand new packaging!"
In March 2021, GoodNites had Kilmberly-Clark overhauled the sizing of Goodnites. Extra-small now ranges range from 28-43 pounds (13-20 kilograms), small/medium at 43-68 pounds (20-31 kilograms), and two new sizes were introduced: large at 68-95 pounds (31-43 kilograms), and extra-large at 95-140+ pounds (43-63+ kilograms).
Effectiveness.
In a study published in the Bulletin of Pediatric Health, GoodNites and similar bedwetting underpants were analyzed for effectiveness in relieving social anxiety related to bedwetting for boys ages 7 to 13 and for girls ages 5 to 15. Nearly five-hundred boys who wore incontinence products on a nightly-basis were compared to a control group experiencing the same problem but did not wear to bed. 625 girls who wore on a nightly-basis were compared to a control group experiencing the same problem but did not wear to bed. The study found, predictably, that nearly all of the children were fearful of being discovered by their peers, while forty-eight percent of the 7-to-10-year-olds and eighty-one percent of the 11-to-13-year-olds described Goodnites, in particular, being "a little" or "very babyish." Despite these statistics, sixty percent said they would not go to bed without them. Asked about what they feared upon "discovery," the top worries were verbal teasing (89%) and loss of friends (61%) followed closely by physical bullying (gaining bullies, being beaten up by a peer, given wedgies, swirlies, or other kinds of playground bullying) 57%, and being compared to a baby (51%). Actual incidences of bullying due to bedwetting were found to be higher among the wearers than in the control, leading the study's author to conclude that the GoodNites and similar products did successfully add to the wearers' confidence, so that they engaged more in what was dubbed for the purposes of the study "risky behavior" (e.g. going to sleepovers, participation in camping trips); 17% of the experimental group reported bullying, while only 11% of the control reported bullying.
Discontinued Products.
Boxers & Sleep Shorts.
GoodNites Boxers (for boys) and Sleep Shorts (for girls) were a product manufactured by Kimberly-Clark from 2007–2009, and distributed from 2007–2010. They were designed to look and feel like boxers. They were blue for boys and pink for girls. The outer covering was cloth-like to look like a pair of boxers. The inside was a pull-up.
As of 2011, Kimberly-Clark makes no reference to this product line on the official GoodNites website.
GoodNites Bed Mats.
GoodNites released GoodNites Bed Mats in April 2012. They can be used to protect the mattress from bedwetting accidents. GoodNites Bed Mats feature adhesive to allow them to stick to the bed.
Competition.
When they were first released, GoodNites were an alternative to waterproof mattress pads and more expensive disposable youth diapers intended for the disabled; as a result, they lacked any direct competition. By 2000, GoodNites' primary competition consisted of store brand disposable bedwetting diapers. In 2002, Procter & Gamble, Kimberly-Clark's primary competitor, introduced Luvs Sleepdrys as a direct competitor to GoodNites. Luvs Sleepdrys were discontinued in 2004, and, from 2004 to 2008, store brands were the primary form of direct competition to GoodNites. In 2008, Procter & Gamble released Pampers Underjams as another direct competitor to GoodNites. In 2020, Procter & Gamble discontinued Pampers Underjams and replaced them with Ninjamas. Currently, GoodNites' competition comes from both Ninjamas and store brand bedwetting pull-ups or diapers.