Adult One Piece Pajamas

one piece
An article of clothing made or consisting of a single piece
(One-pieces) A one-piece swimsuit is a usually skin-tight one-piece swimsuit worn by women and girls when swimming in the sea or in a swimming pool, or for any activity in the sun, such as sun bathing. The one-piece swimsuit usually covers a female's torso.
(of clothing) consisting of or fashioned in a single whole piece; "a one-piece garment"
One Piece also referred to as Shonen Jump's One Piece is a 2-D platforming adventure video game for the Nintendo Game Boy Advance based on the popular Japanese Anime and Manga series One Piece. Developed by Dimps and published by Bandai, it was released on September 5, 2005.

pajamas
(pajama) (usually plural) loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers
A suit of loose pants and jacket or shirt for sleeping in
Pajamas, also spelled pyjamas (see also spelling differences) can refer to several related types of clothing. The original paijama are loose, lightweight trousers fitted with drawstring waistbands and worn in South and West Asia by both sexes.
A pair of loose pants tied by a drawstring around the waist, worn by both sexes in some Asian countries
(pajama) a pair of loose trousers tied by a drawstring around the waist; worn by men and women in some Asian countries

adult
a fully developed person from maturity onward
(of a person or animal) Fully grown or developed
(of animals) fully developed; "an adult animal"; "a grown woman"
any mature animal
Emotionally and mentally mature
Of or for adult people