Insulation: 80g HeatLock™ Shell: Stretch Spandex / Leather Palm: Leather Features: The benefits of Heatwave™ in a workstyle glove, formfit glove with knit cuff, superior warmth and comfort The warming power of Heatwave™ in a rugged, leather, utility-driven shell. The Lift Ops™ glove is the no-nonsense solution to cold hands preventing progress. A sport cuff keeps the cold and wind out in a sleek and comfortable fit. The revolutionary dual heating system found in the Heatwave™ lining reflects and amplifies your body's heat to produce that warm cozy feeling we all look for in a glove. Recommended for: On mountain use or anything requiring rugged warmth.