- Small ( Red) fits 21
- Medium (Gold) fits 21.5
- Large (Black) fits 22
- X-Large (Bright Green) fits 22.5
- XX-Large (Blue) fits 23
- XXX-Large (Purple) fits 23.5
- XSmall (Grey) fits 20.5
Replace your S1 Lifer Helmet Sizing Liners with some fresh ones! The S1 Lifer Helmet Sizing Liners are replacement front and back pads for the S1 Lifer helmet. Sizing works: Small ( Red) fits 21" heads, Medium (Gold) fits 21.5" heads, Large (Black) fits 22" heads, X-Large (Bright Green) fits 22.5" heads, XX-Large (Blue) fits 23" heads and XXX-Large (Purple) fits 23.5" heads. If you are confused just give us a call and we will help you out.
S1 is a global helmet brand rooted in California’s rich Skateboarding, Longboarding, BMX, and Roller Derby Culture. S1′s unrelenting approach to the elevation of safety, style, and quality in its product has earned the brand a renowned position in the helmet market. Today, S1 designs and markets an extensive line of protective helmets through Skate, Longboard, BMX, and Roller Derby specialty retailers in America, Canada, South America, Europe, Japan, Australia, and New Zealand. S1 Helmet Co. is independently owned and operated.