The Gul Power Strapped 5mm Wetsuit Boots have a super grippy sole and are a good balance between warmth and flexibility. Designed using 5mm Dura-Flex neoprene and Titanium 2 lining, the Gul Power Boot is super warm yet flexible. The booties feature a reinforced heel and toe for durability as well as an ankle strap for increased stability and a secure fit.