Gul Flexor Split Toe 3mm Boot - Black The Gul Flexor 3mm is the lightest boot on the market featuring a new and exclusive recoil technology. The recoil helps keep your tendons in place and prevents rolling of the foot. The bare foot rubber sole is flexible and soft but still offers the same outstanding grip that you would get from a thicker sole. Furthermore the flexor has a leash guard that has been added in order to prevent  unwanted leash jams. Features - Blindstitched seam construction, central core heating, frontside reinforcement, bare foot sole, foot support band and leash guard.