Features Original Fit has generous space across the forefoot for toes to splay LuftCore technology embeds a lightweight, air-injected core into higher-density foam for enhanced midsole cushioning 200g of KEEN.WARM Recycled P.E.T. insulation rated to -25°F/-32°C Contoured arch for midfoot support Speed hooks for easy lace adjustment Direct-attach, air-injected Luftcell midsole for long-lasting cushioning Thermal Heat Shield insole captures warmth KEEN.FUSION construction fuses the upper to the sole without glue for a longer-lasting bond that's better for the planet. Abrasion-resistant KEEN.RUGGED outsole for durable, longer-lasting traction Multi-directional lug pattern provides superior traction Materials Waterproof leather and textile upper Non-marking KEEN.FUSION rubber outsole