Ocean for Iwatch band 49mm 44mm 40mm 45mm 41mm 42mm 38mm 40 44 45 mm silicone bracelet iWatch Ultra series 7 6 3 se 8 strap 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 titanium buckle and adjustable loop secure the band during high-speed water sports.