The CO836 Rixen & Kaul 32-36mm Contour Adapter Strap is a high-quality accessory designed for the Contour Saddle Bag. It is compatible with seat posts that measure 32-36mm in diameter, allowing you to attach the Contour Saddle Bag securely to your bike. The adapter strap is made of durable materials that can withstand harsh outdoor conditions, ensuring your bag stays securely in place during your ride.