Designed for the Apollo Space project and as up to date as the latest space shuttle. The Flexor finger tuck was designed to alleviate fatigue and is 35% easier to flex than the traditional box finger construction. These cold weather gloves feature a single seam construction that is twice as strong as conventional sport gloves and eliminates seam heat loss by 50%. The Flexors are great cold weather gloves made of excellent materials. The Flexor leather glove is truly “out of this world”.