S1 Lifer Helmet - Deep Fit Multi-Impact Protection for Ages 5

Our review of the S1 Lifer Helmet finds it best suited for kids and adults who need a compact, comfortable helmet with proven safety credentials for skateboarding, BMX and roller skating. The single biggest reason to buy is its certified multi-impact construction: the specially formulated EPS Fusion Foam and deep fit design are built to absorb repeated impacts, making it a good choice for riders who push their limits and want a helmet that prioritizes protection without feeling bulky.

Key Features

• EPS Fusion Foam: A specially formulated foam layer designed to manage energy from impacts and reduce force transmitted to the head.
• Deep Fit Design: The deeper shell geometry provides a snug, low-profile fit that improves coverage over the temples and back of the head.
• Certified Multi-Impact (ASTM): Tested for multiple impacts so it remains protective in scenarios where repeated knocks can occur.
• Certified High Impact (CPSC): Meets high-impact standards commonly required for skate and bike activities, offering reassurance on safety compliance.
• Adjustable Sizing Liners: Comes with bonus pads to size one step up and down so the helmet can be fine-tuned for fit and comfort.
• Durable Construction: Customers report long-lasting padding and shell durability that keeps the helmet looking good after regular use.

Who It's For

The S1 Lifer Helmet is ideal for younger riders and adults who want a protective, low-profile helmet for skateboarding, BMX, or roller skating; its certifications and multi-impact foam make it especially suitable for people who ride in parks, street spots, or commuter routes where repeated impacts are possible. The included sizing liners and deep fit help accommodate a range of head shapes, so it works well for families buying one helmet to fit different users over time.

Riders who need a full-face motocross helmet or those seeking the absolute lightest race helmet should look elsewhere; this model prioritizes multi-impact protection and coverage over ultra-minimal weight. If precise sizing is critical, measure around your head before ordering since a few customers note the need to switch liners for the best fit.

Pros & Cons

Pros

• Excellent safety focus with both ASTM multi-impact and CPSC high-impact certifications.
• Comfortable deep fit and padding that reviewers praise for feel and long-term comfort.
• Includes multiple sizing liners so you can adjust the fit up or down without buying another helmet.
• Sturdy, attractive shell that customers say "looks good" and resists wear.

Cons

• Sizing can require trying the included liners to find the perfect fit, so initial setup may take a few minutes.
• Not intended for motorbike or full-face racing use; designed specifically for skate, BMX and skating activities.

Specifications

Brand	S-ONE
Model	S1 Lifer Helmet
Impact Foam	Specially formulated EPS Fusion Foam
Fit	Deep Fit Design with sizing liners
Safety Certifications	Certified Multi-Impact (ASTM), Certified High Impact (CPSC)
Protective Rating	Advertised as 5x more protective than regular skate helmets
Recommended Age	5+

Our Verdict

The S1 Lifer Helmet is a strong choice for skatepark riders, BMX enthusiasts and roller skaters who want reliable multi-impact protection in a comfortable, low-profile package. With ASTM and CPSC certifications, adjustable liners, and durable construction, it offers clear value for anyone who prioritizes safety and fit over the lightest possible weight.

Frequently Asked Questions

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

Is this helmet safe for BMX and skate parks?
Yes; it carries both ASTM multi-impact and CPSC high-impact certifications suitable for skateboarding, BMX and roller skating.

Can kids use this helmet?
Yes; it is recommended for ages 5 and up and includes padding options to fit smaller heads.