Polyform HTM-3 Fender 10.5" x 27" - Blue w/Adapter [HTM-3 BLUE W/AIR ADAPTER]HTM 3 Fender 10. 5" x 27" Blue with Adapter In keeping with the Polyform tradition of quality, the HTM (hole through middle) boat fender was designed to provide maximum protection in a wide variety of applications. Vertical ribs for extra protection, reinforced tube ends to prevent lines from pulling through if the fender gets caught in a tight spot, and extra wall thickness to resist punctures and tears are just a few of the features of this high