Made from the same high-performance elastomer as the Ocean Band, this band extension lengthens the 49mm Ocean Band by an additional 50 millimeters — perfect if you need extra length to wear the band over your wetsuit. The extension comes with an extra adjustable, corrosion-resistant titanium loop, which you can place in any tube to tuck the excess band into. This extension must be used with the regular Ocean Band. One Ocean Band extension One adjustable loop Material: Titanium, Fluoroelastomer