Pajamas Flannel

pajamas
A suit of loose pants and jacket or shirt for sleeping in
(pajama) a pair of loose trousers tied by a drawstring around the waist; worn by men and women in some Asian countries
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) (usually plural) loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers

flannel
Men's trousers made of such material
a soft light woolen fabric; used for clothing
washcloth: bath linen consisting of a piece of cloth used to wash the face and body
A kind of soft-woven fabric, typically made of wool or cotton and slightly milled and raised
A washcloth
(usually in the plural) trousers made of flannel or gabardine or tweed or white cloth