WARMTH & STRETCH: 100% Super Stretch neoprene - lighter warmer softer stretchier easier to put on and take off. Thermal lining insulates heat and dries fast. FIT: Thin soft grip sole allows for better board feel. Strapless compression panels keep the boot snug to your feet without a restricting Velcro strap. Pull tab on heel for easier entry. DURABLE & WATERTIGHT: Sole is solid underneath the split toe to prevent leash hang-ups. Glued and blind stitched seam construction.