It's a Warm, Dry World Inside Layer up to match the conditions with the Burton Insulator Mittens. These lightweight insulated mitts are soft and flexible. Wear them on their own in mild weather, or pair them with the Burton 3L Shell Mittens for colder, stormier days. Their minimalist design stuffs easily in a jacket pocket or touring pack. Features: Lightweight and Flexible Lightweight Pertex® 20D Nylon shell is soft, flexible and coated for water repellency. A combo of the brushed microfiber liner and low-profile ThermacoreECO insulation seals in heat. Phone Friendly Screen Grab® tech on the palm and thumb lets you use your phone without removing your mittens. Low Environmental Impact Bluesign® approved product uses responsibly produced and recycled materials and PFC-free DWR for a reduced impact on humans and the planet during manufacturing.