The 24-7 Series Eco Tec Tactical Shirt contains REPREVE polyester, one of the most certified, earth-friendly fibers available in the world, made from 100% recycled materials including water bottles. Products made with REPREVE help conserve energy and natural resources, giving customers another great reason to recycle. The Eco Tec Tactical T-shirt provides soft, 4-way stretch comfort and moisture wicking, anti-microbial technology.