Created in extremely supple, 1.5 mm thick, double-lined Ultraspan neoprene, these boots have non-slip and anti-wear soles and an Aquastop seal in single-lined neoprene at the top. They are perfect for all indoor and outdoor water sports thanks to the high protection and thermal function that they offer. 1.5 mm double-lined Ultraspan Neoprene. Anti-slip sole. Aquastop top sealing.