The altura airstream overshoes are ideal protection against the elements and allow you to keep spinning whatever the weather these altura overshoes are made from neoprene stretch fabric known for its durability the stretch element of the fabric ensures enough flexibility for natural movement but also fits snugly around your shoe for maximum control the rear zip closure and velcro adjuster secure the overshoe firmly so that you may ride as aggressively as you like without fear of it coming o