Our Freeride World Tour Wintersport socks help you achieve the perfect boot fit for your skiing or riding. There is nothing unnecessary here. Just the technical features needed to keep your feet warm, dry and blister free. SIN3RGI is extremely soft light and durable. It does not absorb moisture which means it dries very quickly. They are perfect for any high output activity. Our poly is 100% certified-recycled; 100% of the material comes from post-consumer waste like plastic bottles.