The Ocean Band is molded in a high performance elastomer with a tubular geometry allowing it to stretch for a perfect fit, even over a wetsuit. The corrosion-resistant titanium buckle and adjustable loop secure the band during high-speed water sports. A band extension is sold separately to fit over your thickest wetsuit. For extra length, an extension band is sold separately, enabling you to wear the Ocean Band even over your thickest wetsuit.