6pm.com is proud to offer the DeFeet - UnDLite (Grey) - Hosiery: It won't matter if it's spring or winter, the DeFeet Un D Lite sleeveless tank top is the base layer that will keep you comfortable and ready to go. ; Thinnest and lightest base layer available, made to be very stretchy and forgiving for a comfortable fit. ; Athletic cut for a slim, contoured fit. ; A lightweight fabric made from sustainable fibers. ; Crew neck. ; Sleeveless. ; Drop tail hem. ; DeFeet logo at chest. ; 88% polyester, 12% Spandex. ; Machine wash cold, tumble dry low. ; Made in the U.S.A.