WINTER WARMTH. The Isto Hand Warmer is ready for those cool days when you want extra warmth for your hand but need your fingers free for tasks. With a heavy cable knit construction and Merino wool, this glove brings comfort just where you need it. RECYCLED FABRIC. Made from a blend of Merino Wool and recycled polyester for increased durability and sustainability, these soft, lightweight hand warmers offer cozy protection for adventurous cold days. WHY MERINO WOOL? Thinner and softer than regular wool, it's easy to wear next to skin. Each fiber transports sweat away as a vapor (we tested it ourselves) and regulates body temperature to keep you cool in summer and warm in winter. FUNCTIONAL FEATURES. Go far, feel good with thoughtful tech to keep you adventuring comfortably — single-layer heavy cable knit construction with ribbed cuff provides a perfect fit while also maintaining optimal comfort. GO FAR. FEEL GOOD. From wool socks to base layers for men, women and kids, we aim to provide the highest quality apparel for your outdoor adventures with a commitment to environmental sustainability, racial equity and inclusivity.