S1 Lifer Kids & Adult Skate Helmet - Deep Fit Safety

In this review the S1 Lifer Helmet is judged as a versatile, safety-focused choice for skateboarding, BMX and roller skating riders aged 5 and up. The bottom line: it is worth considering if you want a helmet built around impact protection rather than fashion alone, because the specially formulated EPS Fusion Foam and dual certifications make safety the standout reason to buy. Fit and comfort are strong too, thanks to the deep fit design and included sizing liners that help dial in a snug feel for both kids and adults.

Key Features

• EPS Fusion Foam: The specially formulated foam is designed to absorb repeated impacts, giving riders confidence during higher-risk tricks and falls.
• Deep Fit Design: A deeper shell profile improves coverage around the temples and back of the head for a more secure, stable fit during active use.
• Multi-Impact Certification: Certified to ASTM multi-impact standards, it is intended to withstand multiple impacts better than single-impact shells.
• High Impact Rated: CPSC high-impact certification means it meets established safety requirements for skate and bike activities.
• Adjustable Sizing Liners: Each helmet ships with bonus sizing liners to move one step up or down, simplifying the process of getting a correct fit.
• Wide Age Range: Recommended for ages 5+, making it suitable for youth progressing into teenage and adult riders.

Who It's For

The S1 Lifer is best for skateboarders, BMX riders and roller skaters who prioritize protection and durable construction over minimal, ultra-light helmets. Its certifications and multi-impact foam make it a smart pick for riders who practice tricks, ride parks or who want longer-lasting protection across multiple incidents.

Riders who want an ultra-ventilated race-style cycling helmet or those needing a very lightweight cross-country design should look elsewhere. Also, if you need an exact half-inch incremental fit without liners, professional custom-fit options may be a better match.

Pros & Cons

Pros

• Excellent impact protection thanks to EPS Fusion Foam and dual certifications for multi-impact and high-impact use.
• Comfortable deep fit and included liners make getting a secure fit straightforward for different head sizes.
• Durable construction and padding that customers report holds up well over time.

Cons

• Less ventilation than some road cycling helmets, which may feel warmer during long sessions on hot days.

Specifications

Brand	S-ONE
Foam	Specially formulated EPS Fusion Foam
Design	Deep Fit Design
Certifications	ASTM multi-impact, CPSC high-impact
Protection Claim	5x more protective than regular skate helmets
Sizing	Includes bonus sizing liners to size one step up and down; measure head circumference to determine fit
Recommended Age	5+ years

Our Verdict

The S1 Lifer Helmet is a solid value for riders who want proven impact protection and comfortable coverage without paying for niche features. Its combination of multi-impact foam, dual certifications and adjustable liners makes it a practical long-term helmet for skate parks and street riding, especially for families buying a helmet that will fit growing kids as well as adults.

Frequently Asked Questions

How do I size this helmet?
Measure around your head with a soft tape or string and use the included liners to move one step up or down for a snug fit.

Is this helmet certified for skate and bike use?
Yes, it carries ASTM multi-impact and CPSC high-impact certifications appropriate for skateboarding, BMX and roller skating.

Will it be comfortable for long sessions?
The deep fit and padding offer good comfort, though ventilation is less aggressive than road cycling helmets and may feel warmer on long hot rides.