Insulation: 420g HeatLock™ Insert: DryHand™ Waterproof/Breathable Shell: CompTech Palm: LeatherTex No matter the conditions you can keep your hands feeling like they're in a warm and comfy cloud with the Puff Pal Mitt. An amazingly comfortable interior is built around 420g HeatLock™ insulation encased in a durable CompTech shell. And with a DryHand™ insert, it's fully waterproof/breathable. Recommended for: on-mountain use and extended periods in the cold