Polyform A-Series Buoy - White The A Series is the product that launched the Polyform story. This all- purpose buoy, with the signature blue ropehold has proven itself in the most adverse conditions. Marking gear used in heavy seas is no easy task. Thats why more fishermen use Polyform A Series than all other buoys combined. You name it ocean, sea, river or lake and the A Series has been there. Put your trust in Polyforms most versatile and well-known product. Available in 8, 11, 14.5, 17, and