SUSTAINABILITY: Designed with recycled EPS foam SPECS: Weight: 330 grams Size range: 53-61 cm DESIGN & DETAILS: Versatile, heavy-duty helmet for any type of climbing adventures Designed with a cutting-edge combination of EPP and EPS foams in a robust ABS hard shell Foam padding covers the entire interior to provide optimal protection from universal impact Strategic ventilation openings provide breathability to prevent overheating Easy, one-hand thumbwheel adjustment system allows you to customize the size without much effort Clip brackets allow you to securely attach a headlamp Helmet sits compactly to fit each unique head shape and size Stowable straps make it easy to pack Matte exterior surface Comes with a bag for easy transport