1. FITS FOR 27''-29'' TRAILER WHEEL - Set of 4 covers fits entire tire diameter up to: 27" - 29", it's NOT the rim size.Please Measure before purchased. 2. UPGRADED DURABLE MATERIAL - 3 layers ripstop non-woven fabric + 1 layer anti-UV Coating + 1 layer water resistant membrane, protects tires and wheels from sun damage, rust and dirt when your vehicle is parked. 3. SECURE FIT - Elasticized back hem and hook design for a fast and adjustable fit, prevent the tire cover blown away by the heavy wind 4. MULTIFUNCTION - tire covers could be used on car & truck, SUV, trailer, camper, motor home & RV, or anything with the correct tire size. 5. GREAT AFTER-SALE SERVICE - Any issues with your order, please contact us directly!.