You can rely on Polyform Fenders for consistent, reliable protection. Their unique manufacturing process produces buoys and fenders all in one piece and achieves a uniform wall thickness throughout the product. This guarantees the superior structural strength that your boat needs. With Polyform&';s limited lifetime warranty, these fenders are guaranteed for life! Enjoy exceptional quality at economical prices with Polyform fenders. The G-Series provides full-length ribs for increased resistance to abrasion, along with commercial strength marine vinyl and one-piece construction for years of reliable service. Product Specs: Even wall thickness for maximum strength Molded in ribs for strength and abrasion resistance Reinforced 3/4" Eyelet rope holds Designed for use by trailered boats and permanent protected moorings Unique Polyform valve for years of service Diameter 8-1/2" inches Length 27" inches Recommended boat size 25&'; to 40&'; Feet