The Palm Pilot Cap, a 2mm neoprene skull cap thats great for winter kayaking trips, this will fit under the majority of kayaking helmets. Whether you are spending the day in your freestyle kayak pulling ends. Or whether are are river running on your local white water river, you will probabbly get your head wet; this kayaking skull cap is the answer to keeping your head warm! This neoprene skull cap incorporates a 2mm neoprene construction which also features a quick drying insulated liner for added warmth.