The A-Series is the product that launched the Polyform story. This all-purpose product, with the signature "blue ropehold" has proven itself in the most adverse conditions. Marking gear used in heavy seas is no easy task. That's why more fishermen use Polyform A-Series than all other buoys combined. You name it, ocean, sea, or river, and the A-Series has been there. Put your trust in Polyform's most versatile and well-known product. Features A Series Buoy A-5 - 27 in. Dia - White 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 Specifications Color: White Size: 27" x 36" Eye Diameter: 1.25" Circumference: 84.9" Buoyancy Ratings: 396 lbs Weight: 18.5 lbs