Comfortable Loungewear

comfortable
(esp. of clothes or furnishings) Providing physical ease and relaxation
(of a person) Physically relaxed and free from constraint
in fortunate circumstances financially; moderately rich; "they were comfortable or even wealthy by some standards"; "easy living"; "a prosperous family"; "his family is well-situated financially"; "well-to-do members of the community"
Not in pain (used esp. of a hospital patient)
providing or experiencing physical well-being or relief (`comfy' is informal); "comfortable clothes"; "comfortable suburban houses"; "made himself comfortable in an armchair"; "the antihistamine made her feel more comfortable"; "are you comfortable?"; "feeling comfy now?"
more than adequate; "the home team had a comfortable lead"

loungewear
Casual, comfortable clothing suitable for wearing at home
clothing suitable for relaxation