TRIANGLE Dirt Bike Helmet Full-Face Adult (S-XL), DOT-Certified — Ventilated, Removable Liner

The TRIANGLE Adult Dirt Bike Helmet is a DOT-certified full-face motocross helmet that pairs a high-strength ABS shell and impact-absorbing EPS liner with an efficient ventilation system and a full riding kit.

Riders who demand reliable protection and all-day comfort will appreciate this motocross helmet’s tested safety build, removable washable liner, and included accessories. TRIANGLE designed this helmet for off-road riding with multiple vent ports to keep airflow moving and a snug fit across four adult sizes. The package also includes goggles and gloves so you’re prepared for trail conditions right out of the box.

How does the TRIANGLE helmet protect me on the trail?

This helmet combines a DOT-certified ABS outer shell with a high-density EPS inner liner to manage and disperse impact energy. The full-face design adds chin and jaw coverage for complete facial protection during off-road riding. All construction and materials are chosen to meet regulatory safety standards without adding unnecessary bulk.

• DOT safety certification for road and trail compliance
• High-strength ABS shell resists penetration and abrasion
• High-density EPS liner absorbs and disperses impact forces
• Full-face coverage includes reinforced chin protection

Will I stay comfortable on long rides and in hot weather?

The helmet uses a multi-ventilation layout—chin, sides, top and rear vents—to channel cool air in and push warm air out, reducing heat buildup. Internal airflow combined with a breathable, moisture-wicking liner helps manage sweat during extended use. The liner is removable and washable, so you can refresh the fit and hygiene between rides.

• Multiple intake and exhaust vents for continuous airflow
• Breathable, sweat-wicking liner keeps interior dry
• Removable liner for easy washing and odor control
• Low-bulk design for reduced neck strain on long trips

What accessories come with the helmet and what do they do?

TRIANGLE includes goggles and gloves to complete a basic riding kit so you can start riding right away. The goggles provide wind resistance and UV protection and are shaped to fit the helmet’s eye port for clear sightlines. The gloves offer a snug, non-slip grip and protect hands from abrasions and trail debris.

• Goggles with wind-blocking lenses and UV protection
• Gloves with textured palms for secure grip and control
• Accessories sized to integrate with the helmet’s fit and venting
• Packaged set simplifies gear choices for new riders

How do I choose the right size and ensure a secure fit?

Pick from four adult sizes—S, M, L, XL—based on head circumference for a stable, comfortable fit that won’t shift while riding. The helmet’s internal padding conforms to head shape but remains snug, and the removable liner can be adjusted or replaced for fine-tuning. A correct fit keeps the helmet’s safety features aligned with your head for proper protection.

• Available sizes: S (55–56 cm), M (57–58 cm), L (59–60 cm), XL (61–62 cm)
• Measure full head circumference above eyebrows to choose size
• Removable padding lets you fine-tune fit and comfort
• Secure strap system prevents unwanted movement while riding

Who is this for? The TRIANGLE Adult Dirt Bike Helmet is intended for recreational and serious off-road riders who want a DOT-certified full-face helmet with practical ventilation, a washable liner, and included goggles and gloves. It suits riders who need immediate, ready-to-ride protection in a range of adult sizes without sacrificing comfort or airflow. This helmet is a good match for motocross enthusiasts, trail riders, and commuters who occasionally take dirt tracks, provided they select the correct size for a snug fit.