Features of The North Face Men's Hedgehog 3 Waterproof Boot The North Face, we purchase 100% of our leather from Leather Working Group-certified tanneries Waterproof DryVent membrane Multilayered overlays for rugged toe and forefoot protection Outdoor-inspired webbing and laces Built on an updated last that offers comfort and consistent sizing Sole Unit: Resilient and comfortable EVA Midsole with a 5 mm increase in cushion under forefoot from previous version 8 mm Heel/toe offset Surface CTRL rubber Outsole is built for durability and is made with 10% natural rubber Upper: Mixed-material Upper made with leather, synthetic leather, durable ripstop and spacer mesh