Zoot Sports Women's Run Sunset Singlet Body: 100% Polyester (CDP 50%) with Icefil technology, 129gm2/ Mesh: 100% Polyester, 90gm2 Imported Reflective details for visibility in low-light conditions Ultra-light melange knit construction with Icefil uses Xylitol to keep you cool and comfortable Mesh back panel for enhanced ventilation and cooling Flat lock stitch construction ensures next-to-skin comfort and minimizes chafing UPF 50+ sun protection