Description: Helmet outer shell is high temperature resistant plastic, features high strength, lightweight, strong toughness and corrosion resistance, Inner liner is ultra-light EPU, better shockproof, soft and comfortable, reduce damage to your head Along with a soft hook & loop impact absorption liner, can minimize the harm to your head Adjustable chin strap with quick release buckle, better adjust and fit your head circumference, easy to wear or take down, and with protector design, can better protect your head Vents design provides great ventilation and excellent radiating to your head, heat dissipation, breathable Suitable for kids and adults, when doing outdoor sports like: rock climbing, mountaineering, snowboarding, rappelling, caving, ice skating, motorcycling, BMX, scooter, cycling, caving, rappelling, skateboarding, inline skating, roller skating, workout, construction, etc. Specification: Material: PC, EPS Size: approx. 28x22x14cm/11x8.7x5.5inch Package Includes: 1 Piece Cycling Helmet Note: Please allow slight size deviation and color difference.