Seirus Heatwave ST Mammoth Mitt

Some days, winter calls for more than just function—it calls for comfort that makes you want to step outside. We designed the Heatwave Mammoth Mitt for those moments when warmth, softness, and style matter just as much as staying dry. Because who says high-performance can’t also feel like a hug for your hands?

This oversized, puff-style mitt is all about cozy protection without the bulk. It’s filled with 100g of breathable HD® Wool, nature’s original insulation, and lined with our Heatwave™ technology to reflect your body heat and boost warmth. The DryHand™ insert keeps the elements where they belong—outside—while the quilted nylon shell and palm create that signature softness and cloud-like feel.

From snowy walks in the city to après by the firepit, and even mellow resort days when comfort is queen—the Mammoth Mitt is your cold-weather go-to. It’s made for those who brave the chill but crave the cozy. Perfect for pairing with your favorite parka or puffed-up adventure attitude.