Versatile and cozy , the Cozy-Stretch Tank can be worn with the Cozy-Stretch Shorts or paired or under a shirt or jacket with jeans. Made from a premium blend of responsibly sourced wool, recycled nylon, yak, and a touch of spandex, it is the ultimate in comfortable loungewear (hence the name). The wool in this tank is certified by the Responsible Wool Standard, which ensures the welfare of the sheep and the land they graze on.