NRS Storm Hood2. 5 mm neoprene provides excellent insulation against cold water and wind. A barrel lock drawcord around the face opening lets you customize a snug, watertight fit and eliminate flushing. Titanium laminate adhesive helps hold in heat to keep you even warmer and liquid sealant waterproofs the seams. Weve lined the hood with our quick drying Checked VaporLoft for extra comfort and warmth. No more wet, clammy feeling when you pull your head cover on.