Waterproof Neoskin 1MM. Superstretch and Supersoft . Heavier and warmer than Lycra, softer and more flexible than a wetsuit! Completely wind and splashproof. Flexible, smooth interior fabric, makes the NeoSkin easy to don and doff. 1mm thickness. Protects from wind and splash. Superstretch material means it fits all body shapes. Superstretch AND supersoft. YKK Vislon zipper with 100% corrosion free slider. Flat lock with hi-quality thread. Warm and comfy.