Vast. Men's Aqua Terra Elements Tech Tank Classic Fit Aqua Terra Tech Tank features a blend of 96% recycled polyester and 4% elastane. Beyond what you see, the "stretchy" Aquaterra fabric adapts to your body, provides chemical-free UPF 50+ sun and UV protection, wicks away moisture, resists microbes, and dries quickly. Style meets comfort and sustainability all in one shirt. Features 96% recycled polyester + 4% spandex UV-Blocking, Chemical-Free UPF 50+ Anti-Microbial Cling Free Moisture Wicking Quick Dry Fabric Aqua Terra™ - 96% recycled polyester + 4% spandex Fit Model is 5'8 160 lbs and wearing size Large.