One K Defender Helmets*
- Matte Polycarbonate and Advanced ABS Composite outer shell
- Two front, one back, and two center stripe vents
- Comfort padded harness with synthetic suede lining, hook & loop adjustment, and Fastex buckle
- Washable quick-dry, moisture wicking, anti-microbial liner
- ASTM/SEI F1163-15 certified
The One K helmets are available in 3 shell sizes. By using the One K foam liners you can achieve the perfect fit. This system allows the helmet to grow with the young rider. One K helmets are available in 2 shapes, Regular and Long Oval which emphasizes an elongated head from front to back and slightly narrower measurement from side –to – side.
SEE SIZE CHART FOR BEST HELEMET SHELL AND LINER FIT