Triple Eight Unisex Certified Sweatsaver bike and skateboarding helmet, Teal Hologram, Large X UK

Dual-certified skateboard helmet with high impact-absorbing EPS foam, thick dual-density soft foam, and plush moisture-wicking Sweatsaver fabric Complies with US CPSC Bike and ASTM F-1492 skate safety standards; ideal for biking, skateboarding, skating, roller derby, scooters, and BMX Includes two different sets of removable, washable, terrycloth Sweatsaver liners to customize fit; adjustable helmet strap with side-release buckle Available in four sizes: XS/S fits 20 - 21.25 in (51 - 54 cm), S/M fits 21 - 22.5 in (53 - 57 cm), L/XL fits 22.5 - 23.5 in (57 - 60 cm), XL/XXL fits 23.5 - 24.5 in (60 - 63 cm) To determine proper size, measure around head with a soft tape measure or string; liners should be used to further customize fit; manufacturer's 180-day limited warranty