In keeping with thePolyformtradition of quality, theHTM (hole-through-middle) boat fenderwas 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 this high-quality fender has to offer. TheHTM-2 fenderis designed to provide protection and stand-off for larger vessels 20′ to 30′ feet in length. A hole through middle style boat fender made by Polyform and manufactured in the USA HTM-2 are 8.5 in. diameter by 20.5 in. tall with a center tube diameter of 5/8 in. A versatile fender built with reinforced tube ends and molded ribbing for greater durability HTM-2 fenders are recommended for boats between 20 and 30 ft. in length This fender ships as a single unit, pre-inflated, and has a Polyform inflation valve to adjust pressure WARNINGThis product may expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm.For more information go towww.p65warnings.ca.gov.