The Gul BulletSock, made using 3mm T2 neoprene. The sock is cut using REVOFIT: 3D last following the contours of the foot. These Bulletsocks' are easily pulled on and off due to the AQUA-RING: Glideskin neoprene around the top of the opening. The sole of the sock has been reinforced with KEVLAR for added durability. The perfect Sock for watersports such as Canoeing and Kayaking.