Manufactured from the best quality marine-grade vinyl, the Dock Edge Dolphin Roto-Molded Boat Fender offers superior strength, cushioning, and a high-gloss finish. The Dolphin Fender has been tested for many years in various marine environments worldwide. It resists deterioration from mildew, gas, oil, seawater, and bacteria and has built-in ultraviolet inhibitors. The fender includes an inflation valve to allow for adjustment for the desired level of firmness. SpecsSize: 6.5" x 23"Fender Style: Twin EyeColor: Royal Blue Resists deterioration from mildew, gas, oil, seawater, and bacteria Built-in ultraviolet inhibitors Inflation valve allows for adjustment for the desired level of firmness | 6.5" x 23" Twin-Eye Smooth Boat Fender, Royal Blue