The Ace Wake Water Helmet by Pro-Tec is loaded with features combining style, comfort, and adjustability. This helmet is perfect for kayaking. Best known for its 15 open vent holes for optimum ventilation and drainage, removable ear guards, and our Headlock fit system, the Ace Wake Water Helmet by Pro-Tec is ideal for the ultimate water adventurer! High-density injection-molded ABS shell Dual-density waterproof EVA foam liner Full Surround Interior Protection Head Lock adjustable rear fit system Removable cupping ear guards with water channels Soft Nylon Webbed Straps Multi-use rear mount strap (Red, Orange, Blue helmets only) 15 open vents for ventilation & drainage 3 shell sizes for 6 different helmet sizes CE EN 1385 Water Sport Safety Standard Certification