Craft Size Chart The Essential Round Neck Tee is a thin and stretchy tee for everyday use that keeps you cool and fresh at work, at home or wherever you choose to spend your day. The tee is made of soft and quick-drying polyester with excellent breathability. Features: - Functional, quick-drying fabric - Keeps you cool and fresh all day - Tight fit - 90% Polyester 10% Elastane