[DURABLE MATERIAL] Ribbed boat fenders for docking are made of high-quality, UV-resistant PVC. The marine ribbed inflatable fender features ribs on all sides for extra protection, enhanced strength, and increased friction. These boat bumpers help prevent your boat from abrasion and collision. [FEATURES] This 4-pack of inflatable ribbed boat fenders provides excellent buffering. The twin-eye design helps protect boats and docks from damage caused by heavy impact between hard surfaces, especially during docking or approaching shore. [SCIENTIFIC DESIGN] The inflatable ribbed marine fenders have integrated eyelets molded into the body, with reinforced ends. These black boat bumpers (4 pack) can be hung vertically or horizontally, are easy to install and remove, and help secure the fenders firmly to the boat. [MULTI USAGE] Recommended for boats around 20 feet, including yachts, sailing boats, and rowing boats. Material: PVC Color: Black Package Contents: 4 x Ribbed boat fenders (4.5x16 inch) 4 x Inflating needles 4 x Fender ropes (2M) 1 x Pump Note: Only the items listed above are included. Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.