THROUGHOUT THE WORLD, MORE PEOPLE RELY ON OUR A SERIES THAN ALL OTHER BUOYS.The A Series is the product that launched the Polyform story. This all-purpose buoy, with the signature "blue ropehold" has proven itself in themost adverse conditions. Marking gear used in heavy seas is no easy task. That's why more shermen use Polyform A Series than all other buoyscombined. you name it- ocean, sea, river or lake-and the A Series has been there. Put your trust in Polyform's most versatile and well-knownproduct. Maximum inflation pressure is 2 psi, over-inflation voids warranty Other colors available: White, Green, Saurn Yellow, Yellow, Orange.