S1 Mini Lifer Certified Derby Helmet

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The S1 Mini Lifer helmet is a scaled down version of S1's Lifer helmet. It is a smaller mold with shorter straps. The Mini Lifer helmet is great for little rippers or people with smaller heads. The S1 Mini Lifer Helmet is one of the best-fitting and safest helmets for skateboarding, longboarding, BMX and roller derby. The Mini 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 Mini Lifer Helmet is a Certified "multi-impact" helmet and is up to 5X more protective than the soft foam non-certified helmets. The Mini 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.


  • Smaller helmet shell to fit youth skaters or smaller heads; Mini Lifer fits sizes 18.5"-20.5"
  • Specially formulated EPS Fusion Foam
  • Certified Multi-Impact (ASTM)
  • Certified High Impact (CPSC)
  • 5X More Protective Than Regular Skate Helmets
  • Deep Fit Design
  • Includes 3 sets of sizing liners to customize your fit



Sizing Guidelines: All Mini Lifer helmets have the same size shells. You fit the interior to your head using sizing liners of different thicknesses. See image 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): 18.5''
  • S (red): 19''
  • M (beige): 19.5''
  • L (black): 20''
  • XL (green): 21.5''
  • XXL (blue): 22''
  • XXXL (purple): 22.5''

Questions about S1 helmet sizing? Call Medusa Skates at (512) 203-7203 or email [email protected] We're happy to help!

*Glossy black and black glitter helmets are typically in stock. Other colors may not be in stock and will require additional time to ship. Please contact for further color options