The Summit Belay Mitt is The North Face's warmest & most durable mitten, designed to withstand winter's spent alpine climbing & mountaineering. A waterproof, windproof shell keeps the elements out & the hands protected, while the plush 700 fill down & Prima Loft insulation provide reliable warmth within. enhancing performance, a thermal-mapped construction & side-seam baffle help keep the heat where it's needed most, & the trigger finger liner ensures comfort & dexterity. Complete with a water-resistant goat leather palm & reinforced finger caps, the Summit Belay Mitt was built with cold-weather longevity in mind.