Keen Revel IV Mid Polar Shoes Women black/harbor gray

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.

KEEN.DRY
A waterproof, breathable membrane that lets vapour out without letting water in. Perspiration and moisture naturally produced by the foot are able to escape, while at the same time keeping the wet out and the feet dry.

KEEN.WARM
Lightweight, warm insulation made with charcoal from bamboo to hold heat. The higher the gram rating, the warmer the boot. 

Thermal Heat Shield Footbed
A tri-layer footbed used in KEEN.Warm insulated work boots that captures warmth and provides underfoot comfort.