The Simson Toeclip Straps are very useful straps to secure a bike on the carrier, but they were originally designed for an old-fashioned race pedal! The straps are made of strong nylon and they have a convenient tensioning buckle. The straps are suitable for various applications and particularly suitable to firmly secure a bicycle tires on the bike rack. Insert the end of the strap in the right direction through the buckle, and secure it. After use, the strap is easy to remove by opening the buckle. The straps are delivered per two pieces.