NRS Mystery Sea Hood with Bill Mystery material has a Glideskin exterior that sheds water and 2.5 mm neoprene for outstanding insulation and warmth Titanium laminate adhesive increases heat retention Soft ThermalPlush lining is comfortable to wear all day long The integrated bill will keep the sun and rain out of your eyes and is crushable for easy packing Full-cut style includes ear vents keep your hearing unobstructed and a chin strap to hold the hood securely in place