Zoot Sports Women's Run Sunset Tee Body: 100% Polyester (CDP 50%) with Icefil technology, 129gm2 Mesh: 100% Polyester, 90gm2 Imported Ultra-light melange knit construction with Icefil uses Xylitol to keep you cool and comfortable Mesh back panel for enhanced ventilation and cooling Adjustable side cinches Flatlock stitch to minimize chafing UPF 50+ sun protection