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| Measure the circumference of your head with a soft tape measurer. 18.5" - 20.5" choose the S1 Mini Lifer Helmet 20.5" - 23.5" choose the S1 Lifer Helmet 22.5" -25.5" choose the S1 Mega Lifer Helmet |
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| We batch test every production of S1 Lifer Helmets to ensure the helmets meet and/or exceed current helmet safety standards. We can 100% recommend the S1 Lifer Helmet to family, friends and team riders. www.s1helmets.com |
