The Kilpi REFTY-U socks ensure high climatic comfort thanks to an elastane knit, synthetic fibers and a seamless structure. The thin and breathable material is ideal for intensive sports activities. Sensitively placed functional zones offer you support and necessary comfort. The wide elastic upper hem is comfortable and does not prevent the blood circulation. The fixing hem around the instep holds the sock in place. The heel and toe area is reinforced with a double knit. The socks reach above the ankle. You can choose from several colourful variations.