Materials: Upper: leather and textile, lining: fleece and polyester, Primaloft insulation, breathable, waterproof membrane. Insole: PU and polyester (removable). Outsole: rubber (PowerGrip). Production: Vietnam. The Barefoot shoes perfectly imitate barefoot walking, just as nature intended. The breathable and waterproof membrane undergoes a waterproofness test. The Barebarics PowerGrip sole features a pattern that supports your step and prevents slipping. The Primaloft technology used is the best among thermal insulation materials. Barebarics logo on the shoe, eyelets, laces, or sole. The pocket lining makes it easier to put on the shoes and prevents snow or dirt from entering. Unisex barefoot shoes, even on the coldest days. For maximum comfort, we recommend pairing them with cotton socks. Benefits of barefoot shoes: soft sole, zero heel height: heel and toes at the same level for good posture, wide toe box for your toes, lightweight shoes.