S1 Lifer Helmet - Deep Fit Multi-Impact Skate Helmet

Our review of the S1 Lifer Helmet finds it best suited for riders who want a compact, high-protection option for skateboarding, BMX, or roller skating. The single biggest reason to buy is its combination of a Certified Multi-Impact liner and a deep fit design, which provides a reassuringly secure feel without the bulbous look of many youth helmets. It ships with bonus sizing liners so you can fine-tune the fit, and the construction balances protection, comfort, and clean styling for ages 5 and up.

Key Features

• EPS Fusion Foam: Specially formulated foam absorbs and disperses impact energy for repeated low- to medium-impact events.
• Deep Fit Design: The deeper shell contours the head for a stable, low-profile fit that stays put during tricks and quick movements.
• Certified Multi-Impact (ASTM): Meets standards intended for multiple impacts, which is useful in skate and park environments.
• Certified High Impact (CPSC): Meets CPSC high-impact criteria for added confidence during higher-energy falls.
• Adjustable sizing liners: Includes bonus pads to size one step up or down so the helmet can be dialed in for a snug fit.
• Durable construction: Customers report long-lasting padding and shell integrity that holds up to regular riding and bumps.

Who It's For

The S1 Lifer is ideal for young riders and adults who prefer a low-profile skate helmet with certified protection for both skateboarding and BMX. It works well for park riders, commuters who want something less bulky, and families buying a single helmet that can be adjusted as a child grows.

People who need a full-face motocross helmet or very large-shell mountain bike protection should look elsewhere; this model targets skate-style impacts and a deep, snug fit rather than full-face crash coverage or extended-coverage downhill mountain use.

Pros & Cons

Pros

• Strong safety credentials with both ASTM multi-impact and CPSC high-impact certification.
• Comfortable deep fit and included sizing liners make getting a precise fit easy.
• Good balance of comfort and durability; padding and shell hold up to regular use.
• Clean, low-profile aesthetic that many riders prefer over bulky helmets.

Cons

• Sizing can still require a careful measure with a soft tape or string to get the right liner combination.
• Not intended as a full-face solution for very high-speed motorized sports.

Specifications

Brand	S-ONE
Model	S1 Lifer Helmet
Safety Certifications	ASTM multi-impact, CPSC high-impact
Padding	Includes bonus sizing liners to size up or down
Recommended Age	5+ years
Primary Foam	Specially formulated EPS Fusion Foam

Our Verdict

The S1 Lifer Helmet is a solid value for riders who want certified, multi-impact protection in a deep-fit skate helmet that looks and feels less bulky. With adjustable liners and durable construction it suits growing kids and park riders; skip it only if you need full-face or moto-level protection.

Frequently Asked Questions

How do I determine the correct size?
Measure around the head with a soft tape or string and use the included sizing liners to fine-tune one step up or down.

Is this helmet suitable for BMX and skate parks?
Yes; it is certified for multi-impact (ASTM) and high-impact (CPSC), making it suitable for skateboarding and BMX use.

Can this helmet be used for children?
Yes; it is recommended for ages 5 and up and comes with extra pads to adjust the fit as a child grows.