A Series Buoy A-4 - 20.5" Diameter - WhiteThe A-Series is the product that launched the Polyform story. Thisall-purpose product, with the signature "blue ropehold" has proven itself inthe most adverse conditions. Marking gear used in heavy seas is no easytask. That's why more fishermen use Polyform A-Series than all other buoyscombined. You name it, ocean, sea, or river, and the A-Series has beenthere. Put your trust in Polyform's most versatile and well-known product.Features: Even wall thickness for maximum thickness Heavy duty reinforced ropeholds Polyform's unique vinyl valve system Redesigned ropehold for A-1 through A-7 for improved strength anddurability Dual valve inflation/deflation system for sizes A-5, A-6 & A-7 Excellent rafting fender choice Offered in seven brilliant high-visibility colors Size: 20.5" x 27" Eye Diameter: 1.0 in Circumference: 64.4 in Buoyancy Ratings: 187 lbs