Developed by swimmers for swimmers, with a long-lasting water-repellent coating engineered from Lamoral® Space Tech, the Fastskin LZR Pure Valor 2.0 Closedback Kneeskin includes a compressive inner leg seam for better muscle support. Feel light, flexible and fast - made from lightweight fabric and constructed with moderate compression to support a greater range of movement. Dual layering around the abs offers greater core stability, so you get the best out of your swim. The closed-back style offers increased coverage, which can improve performance and may be preferred by swimmers with straight backs. This product has been fully approved by World Aquatics.