The Seirus Soundtouch Dynamax Glove Liners are like an invisible layer of warmth for your hands. The Dynamax material is a dual density dynamic Thermax hollow-core poly fiber that provides incredible flex and reliable warmth.. With a next-to-skin fit and Soundtouch pads on the thumb and forefinger to allow you to operate touch screen devices, your dexterity is never compromised. Seirus Soundtouch Dynamax Glove Liners are perfect under a waterproof shell or on their own in more mild conditions.