The Prolimit Hydrogen unisex fleece boot is the warmest boot in the Prolimit range. The neoprene is 6.5 mm thick and is lined with Zodiac plush on the inside. The natural rubber reef sole makes you feel like you are walking on bare feet. Straps attached to the ankle to adjust the fit and reinforcements on the heels make this the perfect boot for hardcore riders who like to get out on the water in winter. The neoprene is 6mm thick and anti-allergic. Available in black, size 37 to 47.