New Scuba Diver 2mm Neoprene Watch Cap Beanie with Dive Gear Design (Small-Medium) for Boatwear and WaterSports - Black 2mm Neoprene Quality Construction Designed for warm water diving or swimming Top Vented to Provide Better Water Flow by Releasing Trapped Air Two Rear Grommets Allow Beanie to be Tied Off Great Gift Idea Ready for Your Next Dive Adventure!