The Palm Header Cap, a 1.5 mm neoprene skull cap that is perfect for wearing under your kayaking helmet. Whether you are ripping it up in your freestyle kayak, or whether you’re running a river on winter kayaking trips, this will help keep you warm. This kayaking skull cap also has a chin strap that will keep it down over your ears, thus will then also help to prevent getting surfers ear! The Header Cap has a 1.5mm neoprene construction which also incorporates titanium insulation for added warmth.