Materials: Upper: Leather + Textile, Lining: Fleece + Polyester / Primaloft insulation / breathable, waterproof membrane, Insole: PU + Polyester (removable), Outsole: Rubber (PowerGrip). Production: Vietnam. The barefoot shoes perfectly mimic walking barefoot, just as nature intended, featuring a breathable and waterproof membrane (each pair undergoes a waterproof test). The Barebarics PowerGrip sole has 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 easy 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.