This little beanie beats the chill and is a smart addition to any diver's warm water gear bag. The skull cap design and moderate thickness (2.5mm) allow it to provide good thermal protection without the constricting feel of a full hood. The anatomical shape and multi-adjustable hook and loop neck cinch also give divers a precise fit. Sport Cap (Beanie) is manufactured from premium nylon 2 neoprene rubber with flat-locked stitched seams for comfort and durability. The flat-lock stitched seams feature mean when you remove the beanie you won't look like the B&O Railroad runs around your head at the end of your dive. Beanie has a non-corrosive plastic D-ring attached to the chin strap, comes in multiple sizes from and is black in color.