Cool Sets Sleepwear

sleepwear
nightwear: garments designed to be worn in bed
Pajamas or other clothing suitable for wearing in bed

cool
Become or cause to become calm or less excited
Behave in a less excitable manner
the quality of being at a refreshingly low temperature; "the cool of early morning"
neither warm nor very cold; giving relief from heat; "a cool autumn day"; "a cool room"; "cool summer dresses"; "cool drinks"; "a cool breeze"
Become or cause to become less hot
make cool or cooler; "Chill the food"

sets
A collection of implements, containers, or other objects customarily used together for a specific purpose
A group of people with common interests or occupations or of similar social status
(set) put: put into a certain place or abstract location; "Put your things here"; "Set the tray down"; "Set the dogs on the scent of the missing children"; "Place emphasis on a certain point"
A group or collection of things that belong together, resemble one another, or are usually found together
(set) a group of things of the same kind that belong together and are so used; "a set of books"; "a set of golf clubs"; "a set of teeth"
(set) fit(p): (usually followed by `to' or `for') on the point of or strongly disposed; "in no fit state to continue"; "fit to drop"; "laughing fit to burst"; "she was fit to scream"; "primed for a fight"; "we are set to go at any time"