Staying protected never looked so good. Keep it flashy with the Flash Helmet. Including the Liquid Force exclusive CE-rated Sweat Saver liner to keep you cool and comfortable for endless hours on the water. A dual-density foam, wrapped in a plush terry cloth fabric designed to be soft and form-fitting for the most comfortable helmet on the market. With full new range of colors, there's an option for everyone. High Visibility Skull Protection Sweat Saver Terry Cloth Liner #1 For Comfort and Safety 10 Vent Classic Skate Shell Design CE Certified EN 1385 Water Sports Standard Dual-Density Foam Liner for 360° Impact Protection Removable Ear Flaps Included Color: Canvas Camo Helmet Size Circumference (inches) Circumference (centimeters) Hat Size X-Small 20.1" - 20.5" 51 - 52cm 6 3/8 Small 20.6" - 21.3" 52 - 54cm 6 1/2 - 6 7/8 Medium 21.4" - 22.0" 54 - 56cm 6 7/8 - 7 Large 22.1" - 22.9" 56 - 58cm 7 - 7 1/4 X-Large 23.0" - 24.0" 58 - 61cm 7 1/4 - 7 5/8 To ensure a perfect fit, measure the circumference of your head starting in the middle of your forehead and match it with the sizes above.