FeaturesMaterial: Pro stretch neoprene made from recycled polyester and nylonStretch silicone material insideNeoprene foam: Superlight Foam partly recycled, a lightweight and stretchy material made from recycled tires and neoprene scraps for unmatched thermal retentionExternal seams: GBS seams (glued and stitched) to limit water entry and provide more flexibilityModel: Neoprene boots with separate toeThickness: 3 mmClosure system: Vulcanised construction for good arch supportComposition [Main material] 80% neoprene, 20% nylon