One K Defender Chrome Helmet

Item #: 17003021
  • Description
  • Size Chart
  • Video
  • Reviews
  • Q & A

One K Defender Chrome Helmet

One K English Riding Helmets boast the perfect synergy between advanced technology and aesthetically pleasing design. With enough features to appeal to those seeking everything a helmet could possibly offer, wrapped in a package that traditionalists can appreciate, One K™ has the best of both worlds. Certified to ASTM standards.


  • Matte Polycarbonate and Advanced ABS Composite outer shell
  • Injection molded shell design
  • Washable quick-dry, moisture wicking, anti-microbial liner
  • Stainless steel mesh
  • Comfort padded harness with synthetic suede lining
  • Hook & loop adjustment, and Fastex buckle
  • Two side, two front, one back, and two center stripe vents
  • Fitting & Adjustment

    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.

    Wearing the wrong shaped or size helmet can lead to increased pressure and discomfort. One K has options for perfect the fit. Please note that both Regular and Long Oval shaped helmets use the same liners. Shape is determined by shell, not the liner.

    One K Refit Liners

    Instantly refresh your helmet with the One K removable and washable One K liners. Available in XS-XXL and One K Junior liners are available in XS-M. One K Liners are the easy way to refresh your helmet or size up or down for a helmet that doesn't quite fit.

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