Two layers of brushed back 90/10 polyester/spandex knit,Soft brushed back poly/spandex offers 4-way stretch,Wicks moisture away from the head,Two-ply creates barrier between skin and embellishment for added comfort during wear,Fully reversible for wearing on either side,Brushed back poly/spandex provides warmth without the bulk,Stretches to fit most,Seam on bottom, thicker part of band