Gab Shark Swim Trunks Fabric composition: 91% recycled polyester, 9% spandex Fabric weight: 5.13 oz./yd.² (174 g/m²) Liner composition: 92% polyester, 8% spandex Liner weight: 4.42 oz/yd² (150 g/m²) Four-way stretch water-repellent microfiber fabric Elastic waistband with drawcord Anti-chafe mesh inner liner Mesh pockets Small inside pocket for valuables UPF 50+ protection Fabric is OEKO-TEX 100 standard certified Fabric is Global Recycled Standard (GRS) certified