The Ace Wake is loaded with features combining style, comfort, and adjustability. Best known for its 16 open vent holes for optimum ventilation and drainage, removable cupping ear guards, and Headlock fit system. High density ABS injection molded shell for durability and ultra light protection. X-Small, 52-54 cm (20.42in - 21.25in) Small, 54-56 cm (21.3in - 22.0in) Medium, 56-58cm (22.0in - 22.8in) Large, 58-60cm (22.8in - 23.6in) X-Large, 60-62cm (23.6in - 24.4in) Sizing Information here: http://www.shopprotec.com/size-chart-head/

CERTIFICATION - CE EN 1385 Water Sport Safety Standard. FIT SYSTEM - "Head Lock" adjustable rear fit system. VENTS - 16 open vents for ventilation and drainage. LINER - Dual Density Waterproof EVA. SHELL - High density injection molded ABS.

Outer Material: Acrylonitrile Butadiene Styrene. Special Feature: Adjustable. Size: X-Large. Color: black. Brand: Pro-Tec. Date First Available: April 23, 2014. Best Sellers Rank: #844,216 in Sports & Outdoors. Customer Reviews: 4.0 out of 5 stars 16 ratings 4.0 out of 5 stars. : B004LQ145O. Model Year: ?2011. Part Number: ?1045100. Manufacturer: ?ProTec. Brand Name: ?Pro-Tec. Package Weight: ?1.9 Pounds. Item Package Dimensions L x W x H: ?11.34 x 9.76 x 7.17 inches. Item Weight: ?0.5 Kilograms. Inner Material: ?Expanded Polystyrene. Item Dimensions LxWxH: ?12 x 12 x 12 inches. Outer Material: ?Acrylonitrile Butadiene Styrene. Special Feature: ?Adjustable. Size: ?X-Large. Color: ?black. Brand: ?Pro-Tec.