One K Helmets

One K 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. The Defender series comes in a multitude of styles including the Defender Bling which features hand placed crystals to add a little sparkle to your attire. The Defender series all feature:

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 and loop adjustment and Fastex buckle

Two side, two front, one back and two center stripe vents

Available in 3 outer coverings: Chamude synthetic suede, painted matte or painted gloss shells

Shatterproof polycarbonate retractable sunvisor (Defender Pro only)

Sizing Chart:
Extra Small: 51-52cm or 6 3/8-6 1/2
Small: 53-54cm or 6 5/8-6 3/4
Medium: 55-56cm or 6 7/8-7
Large: 57-58cm or 7 1/8-7 1/4
Extra Large: 59-60cm or 7 3/8-7 1/4
Extra Extra Large: 61-62cm or 7 5/8-7 3/4

Re-fit/Replacement Liners

Defender helmet liners are available separately. You can instantly refresh your helmet with a new liner and you can even change its size! Here's how it works: Two shells make up all sizes. The base shells are medium and large. Use a medium size helmet with a small or extra small liner to change the fit to small or extra small. Use a large size helmet with an extra large or XXL linet to change the fit to XL or XXL.

One K 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. The Defender series comes in a multitude of styles including the Defender Bling which features hand placed crystals to add a little sparkle to your attire. The Defender series all feature:

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 and loop adjustment and Fastex buckle

Two side, two front, one back and two center stripe vents

Available in 3 outer coverings: Chamude synthetic suede, painted matte or painted gloss shells

Shatterproof polycarbonate retractable sunvisor (Defender Pro only)

Sizing Chart:
Extra Small: 51-52cm or 6 3/8-6 1/2
Small: 53-54cm or 6 5/8-6 3/4
Medium: 55-56cm or 6 7/8-7
Large: 57-58cm or 7 1/8-7 1/4
Extra Large: 59-60cm or 7 3/8-7 1/4
Extra Extra Large: 61-62cm or 7 5/8-7 3/4

Re-fit/Replacement Liners

Defender helmet liners are available separately. You can instantly refresh your helmet with a new liner and you can even change its size! Here's how it works: Two shells make up all sizes. The base shells are medium and large. Use a medium size helmet with a small or extra small liner to change the fit to small or extra small. Use a large size helmet with an extra large or XXL linet to change the fit to XL or XXL.