The materials of the Mercury mittens are extremely robust, and the craftsmanship is excellent. The insulation in the inner gloves has a material weight of 340g/m². The long cuff helps keep snow out, and the goat leather palm is durable, making it ideal for handling ropes, among other things. - Removable inner lining made of long-fiber fleece that insulates very well and dries quickly - PrimaLoft Gold Cross Core insulation enhances thermal efficiency - Waterproof construction thanks to the BD.dry membrane - Goat leather palm - Fabric parts are made of durable recycled fiber - Hanging loops - Adjustable wrist strap The outer fabric is treated with GTT Empel DWR, which repels water without PFC compounds. The manufacturer states the operating temperature range of these gloves to be -12°C to -29°C. Of course, people's tolerance to cold varies greatly, but these gloves are made for truly cold conditions! Black Diamond gloves come with a two-year warranty against manufacturing and materia