Designed for excellent, fast drying warmth and performance. Thinner sole design for a better, true-to-the-board feel. Fully lined with Quick Dry Lining, with 100% UltraStretch neoprene and a glued & blindstitched seam construction sealed with inner Thermo Dry Seam tape and outer Taitex to keep warmth in. The adjustable Velcro ankle straps allow for a comfortable, snug fit. Even the back ankle pull loop is Pressure Bonded to the outer boot to keep more water out.