Offering four-season protection in any mountain environment, the Black Diamond Glissade Mitts are our best-value four-season mitts. Whether ski touring the Alps in the middle of winter or making a slushy, summer ascent of a Pacific Northwest volcano, the Glissades' waterproof BD.dry™ inserts, abrasion-resistant Pertex Shield shells and warm fleece lining protect your hands from cold, wet and windy mountain weather.