SCUBAPRO Head Band – 3mm $12.00 You Need to Protect Those Ears, Even in Warm Water When diving in the tropics, sometimes the water is too warm for a full hood, but the ears can still get a bit chilled when spending time at deeper depths. That’s when this comfortable head band comes in handy. Made of 3mm neoprene, it provides optimal ear protection, making it a must-have item for all warm-water dives. Available in 2 sizes. Available Sizes: S/M, L/XL.