Vast. Aqua Terra Floral Watercolor Tech Button up Our Tech Button up ranks as one of our best sellers and delivers unmatched comfort for any occasion. The patented Aqua Terra fabric features a blend of 96% recycled polyester and 4% elastane. Beyond what you see, the "stretchy" Aquaterra fabric adapts to your body, provides 50+SPF sun protection, wicks away moisture, resists microbes, and dries quickly. Style meets comfort and sustainability all in one shirt.