The body reacts to cold by adjusting the blood flow to the extremities, like hands, fingers and feet. White Fingers is a common condition in extreme cold or a result from prolonged exposure and decreased blood flow. If you add restriction and squeeze into the equation these conditions can worsen Waterproof"s G1 Glove series is constructed with all this in mind. Better fit and flexibility, enhanced warmth, less restriction and squeeze. Our pressure tested 7mm Semi-Dry Polar Evoluted Glove features a 3mm internal seal to keep your hands extra warm and dry.