Capto Undercuff is designed to maximize the use of your hands, while keeping them warm, dry and protected. One continuous piece of Pittards® high-quality leather is applied directly to the palm of the Capto Undercuff to provide a reactive fit and feel. The top of the hand has 40 grams of Thinsulate insulation and Sympatex® membrane, making the Capto Undercuff completely waterproof and windproof. Sealed at the wrist with a velcro closure, they’ll fit under the cuff of any jacket. >>California Proposition 65