Zoot Sports Women's Performance Tri Racerback Body: 82% Polyester / 18% Spandex, 200gm2/ Inset: 80% Nylon / 20% Spandex, 193gm2/ Lining: Mesh: 81% Nylon / 19% Spandex, 185gm2 Imported Reflective details for visibility in low-light conditions Performance Endura fabric to help you stay dry and comfortable Built-in bra for integrated support and performance SeamLink stitch construction ensures next-to-skin comfort, minimizes chafing and stretches with fabric UPF 50+ sun protection