Shock Sox are a wraparound, neoprene sleeve that covers the lower part of the upper fork tube and the upper part of the lower fork tube, which provides a protective barrier around the fork seals. The lower portion pushes away dirt and debris while the upper portion has an elastic circumferential strap to help aid in the prevention of migration of the "Shock Sox". Shock Sox - the Ten Second Removable Fork Seal Protector. Removes and installs in Ten Seconds. Only fits inverted up side down style forks. The "Helmet" for your fork seals. Just like your helmet, you put Shock Sox on when riding, & take them off when done! Hassle-free fork seal protector. Keeps debris away from fork seals. Fewer blown seals. Multi-strap Velcro closure makes for easy installation & removal. Washable. Won't trap moisture. Sold in pairs.