Atomic Four AMID helmet is a hugely popular model from the Atomic Four family, which brings a totally fresh approach to all-mountain helmet design. The unique combination of AMID technology and Holo Core offers up to 40% more impact protection than industry safety standards – this helmet will keep you perfectly protected anytime, and in any terrain. The helmet’s position on your head and how snug it fits can be fine-tuned with the 360º Fit System. Besides an urban-inspired, low-profile design, the Four AMID helmet also offers a removable liner and goggle clip, which let you ride with beanie and goggles underneath the shell if you want.

AMID: The Atomic Multi-Directional Impact Deflector is a revolutionary dual-density foam system that is fixed to helmet's core and free to move in all directions. Provides up to 40% higher impact protection than industry standards.
Removable and Washable Full Cap Lining
360° Fit System
Holo Core: This unique 'egg-carton' construction creates an extended crumple zone for maximized shock absorption. It also comes with ventilation holes so it's cooler and lighter. This means up to 30% higher impact protection than industry standards.
Hybrid In-Mold Construction: Combines the best of both worlds in helmet construction. The upper is made from ABS hard-shell for extra stability and protection. The lower is in-mold to keep the weight down.
Aircon Venting: With wider and more air channels through each layer of the helmet, hot air has room to escape and adjustable vents actively suck heat away from the head.
Audio Compatible Ear Pads
Live Fit: Live Fit pads surround your head 360° and mold to your head shape for an instant individual fit. They also dampen low-level impacts before the shocks can reach your head.
Helmet Bag
Removable Goggle Clip
3D Molded Ear Pads