The Sturmfist 4 LTR are our bike gloves for winter riding on days when the mercury plunges below 15 degrees F (-9 degrees C). These gloves use superior fabrics and insulation technology to provide unmatched warmth and comfort for your hands. - Durable water-resistant (DWR) distressed goat leather around the hand - Wind- and water-resistant soft shell cuff - Primaloft 8 oz Gold insulation with Cross Core Aerogel technology on back of hand - Primaloft ECO needle insulation with grip control on palm - Merino wool blend lining made from 35% recycled materials - Drawstring cuff closure