The Half Dome Helmet from Black Diamond has long been a staple for climbers worldwide. The helmet features a low profile suspension system with a one-handed dial combined with streamlined headlamp clips for added comfort and simplicity. Finally, a chin strap adds more efficiency and security while on the rock.\n\nCo-molded EPS foam with low-profile polycarbonate shellLow-profile suspension systemStreamlined, lightweight headlamp clipsOne-handed fit adjustment dialEasily adjustable chin strapWeight:S/M: 330 gM/L: 350 gSize:S/M: 50-58 cmL/M: 56-63 cm Black Diamond Unisex Half Dome Helmet Octane | Buy Black Diamond Unisex Half Dome Helmet Octane here | Outnorth