S1 Lifer Helmets

$79.99 - $89.99
(1 review)
Current Stock:
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The S1 Lifer Helmet is one of the best-fitting and safest helmets for roller derby, general skating, skateboarding, road bikes and BMX. The Lifer Helmet uses a specially formulated EPS Fusion Foam which allows it to protect your head from multiple low force impacts as well as high impacts. The Lifer Helmet is a Certified "multi-impact" helmet and is up to 5X more protective than the soft foam non-certified helmets. The Lifer helmet is a break-through design combining the added safety of a CPSC and ASTM certified helmet with the comfort and fit of a non-certified helmet. THATS RIGHT-- DUAL CERTIFIED! We love this helmet series.

If you need two different size liners-- I personally need a large (black) liner in the back and a medium (tan) in the front. Please leave a note in the comments at checkout.


  • S1 Lifer Helmet fits heads 20.5 - 23.5"
  • Specially formulated EPS Fusion Foam
  • Certified Multi-Impact (ASTM)
  • Certified High Impact (CPSC)
  • 5X More Protective Than Regular Skate Helmets
  • Deep Fit Design


Sizing Guidelines: See chart below on how to measure your head, then pick corresponding liner size from this list. This is what you will choose for "Helmet Size."

  • XS (grey): 20.5"
  • S (red): 21"
  • M (beige): 21.5"
  • L (black): 22"
  • XL (green): 22.5"
  • XXL (blue): 23"
  • XXXL (purple): 23.5"

Want longer lasting, more comfortable liners? Try the S1 Terry Sweatsavers. Click here
Questions about which size helmet you need? Call Medusa Skates at (512) 203-7203 or email medusaskates@gmail.com. We're happy to help!


  • 5
    Amazing Helmet!

    Posted by Ji Bocanegra on 12th Apr 2021

    S1 Helmets have protected me in the past from accidents I guaranteed would have damaged my skull, so I ended up helping buy another one for my partner since they’ll begin roller skating pretty soon too.