Cotton Thermal Pajamas

thermal
An upward current of warm air, used by gliders, balloons, and birds to gain height
relating to or associated with heat; "thermal movements of molecules"; "thermal capacity"; "thermic energy"; "the caloric effect of sunlight"
A thermal garment, esp. underwear
rising current of warm air
of or relating to a hot spring; "thermal water"

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

cotton
A soft white fibrous substance that surrounds the seeds of a tropical and subtropical plant and is used as textile fiber and thread for sewing
soft silky fibers from cotton plants in their raw state
fabric woven from cotton fibers
take a liking to; "cotton to something"
A thread of this fiber
Absorbent cotton