For over 40 years, we've specialized in designing and producing a variety of insulated boot covers—often called overboots—trusted by adventurers in some of the world's highest and coldest places.

All Forty Below® overboots are proudly made in North America, using the finest materials from around the world and skilled hand-crafted construction.

Most of our overboots are designed for wilderness use—ideal for mountaineering, backcountry skiing and snowboarding, snowshoeing, fat tire mountain biking, and multi-sport events. A core feature of our products is their stretchy design, making them easy to put on and take off—even in extreme cold or at high altitudes. They're also easy to repair, which is essential given the wear and tear from crampons, gear, and rugged terrain.

We offer a variety of models tailored to fit a wide range of boots, including mountaineering boots, Alpine Touring ski boots, snowboard boots, lightweight trail running and hiking shoes, and cycling footwear for winter biking. We also offer custom boot cover solutions upon request.

Please contact us for additional information about our overboots, and for assistance selecting the right model for you! 

Overboots for Mountaineering:

• Forty Below® Purple Haze™ - For use over double shelled mountaineering boots, single mountaineering boots, and Combi High Altitude Boots.
• Forty Below® K2 Superlight™ - For use over double shelled mountaineering boots and single mountaineering boots.
• Forty Below® Penguins™ (Currently not available) - For use over double shelled and single mountaineering boots.