polyester🚲【EFFECTIVELY PROTECT】: The bike covers keep your bike away from dust, rust, wet water vapor, sunshine and scratches, also keeps floors & walls protected from dirt and tire marks. This bike wheel cover will protect your furniture from getting dirty and keeps the indoor floor clean.🚲【DURABLE & HIGH ELASTIC FABRIC】: This bike cover is made of durable stretchy polyester and spandex fabric that can be freely switched between different types of bicycles.🚲【WASHABLE AND EASY TO STORE】: This bike cover can be washed with water, and it will be dried quickly. The fabric is lightweight and easy to fold and carry around which can save your space.🚲【FITS VARIOUS BIKE TYPES】: The size of this bike cover is approx. 61"L x 24"H (can be stretched to 77''L x 33.5''H), can fit any adult bikes up to 28” wheels (Dimensional tolerance: ±2 cm). No matter whether it is a mountain bike, a road bike, a cruiser bike, single speed or any other kind. No matter what size tires you have on your bike. This high quality cover will fit them all thanks to its innovative design and stretchy fabric (polyester and spandex)🚲 【INSTALLATION STEPS】: It can be easily installed in just a few steps：1. Insert the front wheel into the bike wheel cover; 2. Stuffed the pedal part into it; 3. Slowly put the rear wheel in again; 4. Adjust the elastic band of the upper part appropriately to fit better.