SIFVO Adult Bike Helmet, Grey, Size Medium, Detachable Visor, 18 Vents and Adjustable Rear Dial

SIFVO's M/L bike helmet is a lightweight, ventilated adult helmet with full-coverage EPS impact protection, an adjustable rear dial, and a detachable visor for everyday road and trail riding.

This helmet blends a durable matte polycarbonate shell with a thick EPS core using integrated molding to deliver certified impact protection. Designed to fit head circumferences from 54 to 62 cm, it offers an adjustable retention knob and soft chin straps so riders can dial in a secure, comfortable fit. With 18 vents and a removable visor, the SIFVO helmet aims to balance airflow, coverage, and practical sun and branch protection for commuters, mountain bikers, and road cyclists alike.

How does the SIFVO helmet protect my head during a crash?

The helmet's construction uses a reinforced PC outer shell bonded to an energy-absorbing EPS liner to reduce impact forces. It meets multiple safety standards for consumer helmets, which indicates it has passed standardized impact and retention tests.

• Integrated molding fuses shell with EPS for consistent energy dispersion
• Full-coverage shape extends protection to the rear of the head
• CPSC, CE, and ASTM certifications verify compliance with recognized safety tests

Will this helmet stay cool on long rides or hot days?

Yes — the helmet is engineered with 18 strategically placed vents to encourage crossflow ventilation and lower trapped heat. The airflow aims to reduce sweat and overheating without compromising structural coverage.

• 18 vents create an airflow channel to move warm air away from the head
• Vent placement balances cooling with full-coverage protection
• Matte finish helps reduce glare while maintaining a low-profile look

How do I get the best fit and comfort with this helmet?

Fit is adjusted using the rear dial and soft chin strap. The lightweight shell and ergonomic interior pads reduce neck strain and allow comfortable use for commuting, long rides, or trail sessions.

• Rear retention knob provides micro-adjustments for a snug fit
• Soft, adjustable chin straps minimize pressure and chafing
• Interior padding is removable for washing or replacement

Can the visor be removed and what does it do?

The visor detaches quickly and protects your eyes from bright sun and low-hanging branches on trails. When removed you retain the helmet’s aerodynamic silhouette for road-focused riding.

• Removable visor shields eyes and face from sunlight and debris
• Easily detached for a sleeker road-bike appearance
• Designed not to obstruct your field of view while riding

Who is this for: The SIFVO M/L helmet is aimed at adult riders—commuters, recreational road cyclists, and mountain-bike enthusiasts—seeking an affordable, all-purpose helmet that combines certified impact protection, effective ventilation, and an adjustable fit. If your head measures between 54 and 62 cm and you want a versatile helmet with a detachable visor and lightweight feel, this model is built to cover daily training, trail runs, and urban rides without excess bulk.