Specifications: Head Size Fit: 56-59cm (22.04-23.22in) Material: PC Shell with EPS Buffer and Polyester Strap Technology: Integrated Internal Size: 17x22cm (6.7x8.67in) Outside Size: 36x22x18cm (14.17x8.66x7.08in) Weight: 390g (0.85lb) Vents: 16 Certificate: CPSC 1203 and CE EN1078 This mountain bike helmet complies with U.S. CPSC and E.U. CE Safety Standards for Bicycle Helmets, offering versatility and protection. The construction features a polycarbonate outer shell fused to an impact-absorbing EPS foam layer for durability. The design includes wind tunnel vents and internal channeling for heat dissipation. It is equipped with washable and removable padding, a visor for sun protection, and a rear dial adjustment system for a customized fit. Condition: New. Origin: China.