S1 Lifer Helmet Vs. Soft Foam Helmet (Helmet Testing Lab) from s-one helmet co / s1helmets on Vimeo.

The S-One Lifer Helmet is one of the best fitting and safest helmets for Skateboarding, Longboarding, BMX and Roller Derby. The Lifer Helmet is a Dual Certified Helmet which means it is ASTM Certified to protect your head from multiple low impacts and it is CPSC Certified to protect your head from the single 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. Features: Dual Certified High Impact / Multi-Impact EPS Fusion Foam Deep Fit Design (Fits nice and low on your head) High Impact ABS Outer Shell Lightweight Construction Soft Foam Sizing Liners (For a Perfect Fitting Helmet)

Certification: ASTM F-1492 (Multiple Impact Protection) CPSC Certified (Single High Impact Protection) CE EN 1078 (AUS AND NZ STANDARD BKE)

Hat Sizing Chart Fits head sizes:

S: 21"(HAT SIZE: 6 5/8)

M: 21.5"(HAT SIZE: 6 7/8)

L: 22"(HAT SIZE: 7)

XL: 22.5"(HAT SIZE: 7 1/4)

XXL: 23"(HAT SIZE: 7 3/8)

XXXL: 23.5"(HAT SIZE: 7 1/2)