UnderJams

UnderJams are a pull-on style diaper made by Pampers for managing bedwetting. They are similar to GoodNites. "UnderJams" claim to be softer and quieter than GoodNites, and even though the package states that they will only fit children up to 85 lbs. Also, because of their low waist, they are hardly visible under pajamas. They were discontinued in 2020 in favor of the new P&G product, Ninjamas.
Origins.
UnderJams were introduced in 2008 in the US, as a direct competitor to GoodNites.
Designs.
For boys, UnderJams initially had a pastel green color, with some assorted designs. For girls, they were a purple pastel color, again with limited designs, as opposed to the GoodNites which are white but have many designs. 
Recently, the designs for both genders have been updated with more brightly colored designs.
Sizes.
Pampers UnderJams come in 2 sizes; small/medium and large/extra large the weight ranges for which are specified below.