<!--ProdInc[170088288]/Mall:[rei_US]--> The design blends a minimalist approach with mountaineering-specific details to keep it ultralight yet ready for alpine pursuits Triple-certified design meets global alpine ski certifications plus international mountaineering standards Hybrid shell construction blends a durable exterior with a lightweight in-molded shell for durability where you need it most while keeping the helmet light Exoskeleton enhances impact protection in side impact zones Zonal Koroyd and Mips impact protection absorb energy in the event of a fall Zonal Koroyd coverage offers lightweight, energy-absorbing and ventilated impact protection Mips Brain Protection System reduces rotational forces caused by angled impacts to the head Custom Boa 360 Fit System offers a micro-adjustable fit that also collapses into the helmet for easy stuffing into your pack AirEvac ventilation system integrates with Smith goggles for aximum comfort, venting and fog-free lenses 33 fixed vents keep the air moving and your goggles or glasses fog-free Ionic+ antimicrobial lining offers sweat-activated odor control Low-profile, integrated headlamp strap routing keeps a light in place, and a beanie and ball cap-compatible design lets you match the weather conditions Integrated leash tethers on sides of helmet External bungee loops offer secure attachment to the outside of a pack Comes with Smith helmet bag and Smith cold weather beanie linerImported. Technical specs <table border=1 cellpadding=5 style=''border-collapse: collapse;''><!--[--><tr class=''tech-specs__row'' data-v-fc44804c=''''><th class=''tech-specs__header'' data-v-fc44804c=''''>Best Use</th><td class=''tech-specs__cell'' data-v-fc44804c='''' <a href=''https://www.rei.com/product/211787/smith-summit-mips-backcounty-snow-helmet?colorId=195096'' target=_blank><img src=''https://www.antpop.co.kr/antMain/AntImgView?CustID=jellymom2&MallKind=US&MallID=rei&ProdInc=170088288&MallIDEncodeYes=0&SiteName=PostSelf'' width=''100px'' height=''20px'' border=0></a>