. Fiber content: 82% THOR•LON® Acrylic, 17% nylon, 1% elastic. Constructed with THOR•LON® fibers for superior softness, resilience, durability and moisture-wicking for drier, warmer, better feeling feet. Introducing our latest range of vibrant and fresh colors to elevate your style! Enjoying tennis and playing harder, longer and for a lifetime with the ultimate in foot protection.