Men's outdoor boots KEEN REVEL III. This durable, comfortable hiking boot will take you anywhere, whatever the weather. Two types of insulation cut the chill, and the outsole is designed to holds its ground in icy, slick conditions.FEATURES:- Cleansport NXT™ for natural odor control- 200g KEEN.Warm insulation- Gaiter ring hook- KEEN.Dry waterproof breathable membrane- TRAPOLATOR underfoot insulation systemMATERIAL:- Waterproof nubuck leather upper- Dual climate non-marking rubber outsoleTECHNOLOGIES:KEEN.DRY: A proprietary waterproof, breathable membrane that lets vapor out without letting water in.HEAT TRAPOLATOR: Three layers of innovative heat-trapping materials get sandwiched underfoot to hold warm air in. Works a lot like the insulation in your house.THERMAL HEAT SHIELD FOOTBED: A tri-layer footbed used in KEEN.Warm insulated work boots that captures warmth and provides underfoot comfort.