Crush winter trails in the Columbia Powderhouse Titanium Omni-Heat 3D Outdry Winter Boot. Built to be a burly snow boot for those extreme winter conditions, the boot features a stout waterproof exterior and upper that blocks out moisture when post holing through snowpack or hiking out of torrential downpour. The Michelein Winter Compound adds traction on slick and frozen trails. Omni-Heat reflective warmth technology features reflective material that bounces heat back to the body, preventing it from escaping. Maintaining a warm, comfortable feel through the long hikes in the cold winter backcountry.