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One K (#32770)

One K Defender MIPS Matte Helmet

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Overview

Why We Love This

The ever popular One K Defender now with MIPS technology.  Founded in 1996 by a neurosurgeon and a researcher from the Royal Institute of Technology in Sweden, MIPS stands for Multi-directional Impact Protection System and is designed to add protection against rotational motion transmitted to the brain from angled impacts to the head.  MIPS added protection has been independently proven to reduce rotational motion by redirecting forces that would otherwise be transmitted to the brain. One K MIPS helmet features black matte Polycarbonate and Advanced ABS Composite outer shell; injection molded shell design; washable quick-dry, moisture wicking, anti-microbial liner;  and comfort padded harness with synthetic suede lining, hook & loop adjustment, and Fastex buckle; two front, one back, and two center stripe vents. For best care, wipe down with a clean, damp cloth for dust or dirt;machine wash removable inner liner. Compatible with the CCS Custom Color System.

Imported

CAUTION: Safety equipment must fit properly and be appropriately secured with manufacture approved parts only. Altering or adding to safety equipment voids warranty and can result in injury. As a safety precaution, inspect all products prior to each use.

For additional information on fit, watch our video on how to fit your helmet. Click Here!


Check out the other items we offer from One K helmets Here!


  • One K Defender now with MIPS technology
  • Founded in 1996 by a neurosurgeon and a researcher from the Royal Institute of Technology in Sweden
  • MIPS stands for Multi-directional Impact Protection System and is designed to add protection against rotational motion transmitted to the brain from angled impacts to the head
  • MIPS added protection has been independently proven to reduce rotational motion by redirecting forces that would otherwise be transmitted to the brain.
  • One K MIPS helmet features black matte Polycarbonate and Advanced ABS Composite outer shell
  • Injection molded shell design
  • Washable quick-dry, moisture wicking, anti-microbial liner
  • Comfort padded harness with synthetic suede lining, hook & loop adjustment, and Fastex buckle
  • Two front, one back, and two center stripe vents
  • Compatible with the CCS Custom Color System -front shield, top panel and rails can be changed out
  • ASTM and CE EN certified
Key Specifications
  • MIPS: Yes
  • ASTM/SEI: Yes
  • Oval: Yes
  • Round : Yes
  • STILL HAVE QUESTIONS? SEE Q&A
  • 100% Happiness Guarantee
    100% Happiness Guarantee
    At SmartPak, your happiness is at the core of everything we do. We put our products to the test in our barns and on our horses, and back every order with our world-class customer service so that you can shop with confidence. As part of our Happiness Guarantee, we promise you:
    • Expert advice from riders
    • Free shipping every day
    • Free return shipping on sized items
    • Hassle-free returns up to 365 days after purchase
Ingredients
(Maintenance Dose = )
Ingredient Amount
Sizing
XS-XL, Regular and Long Oval
What Customers Say:
Sizing Chart for One K Defender MIPS Matte Helmet
Specifications
MIPS Yes
ASTM/SEI Yes
Oval Yes
Round Yes
Reviews
One K Defender MIPS Matte Helmet is rated 4.8 out of 5 by 20.
Rated 5 out of 5 by from Very comfortable I have a tiny head and bought it true to size. It was tight at first but didn’t take long to break in. It is light weight and looks good.
Date published: 2022-01-19
Rated 5 out of 5 by from terrific fit. substantial padding. i have been wearing this every day and it fits great and is so comfortable. it makes me feel safe and secure. makes my old helmet feel like a tin can! so glad i bought it.
Date published: 2021-10-28
Rated 4 out of 5 by from Size Up! I am replacing my Ovation helmet which is a M/L and purchased multiple helmets to try including this one. I am really hoping to get a MIPS helmet with the most advanced safety technology. Unfortunately this helmet didn't fit, despite being a size large. I could get it on but it was tight and didn't seem to sit down far enough. The biggest issue was the chin strap...I had to adjust it all the way out to get it to fit and then it hit an awkward point on my ears that I felt like would bother me. The helmets with MIPS seem to run on the small side (other reviews have said this as well) so I wish manufacturers would offer larger size options for us people with big heads! This helmet does come in a XL so I think I will order that to try. It is an attractive helmet (as far as helmets go) and I like the features, so I think it would be good if I can find the right fit. The ear straps seem a little odd so hopefully that won't be an issue with a bigger size. Thanks to SmartPak for the awesome/easy return process though! It makes it so I can try multiple helmets easily.
Date published: 2021-10-27
Rated 5 out of 5 by from Light and comfortable Love this helmet! When I realized I'd had my Charles Owen AYR8 for over 5 years, I knew I needed a new helmet and I originally was thinking of ordering the CO again. Then I found this one and I am so glad I ordered it. My CO was always heavy and my neck would get sore after long rides. This helmet is extremely comfortable and lightweight, and the material is much easier to clean than the leather on my CO, as a bonus it looks very professional on. I also loves the MIPS rating, which makes me feel safer when riding.
Date published: 2021-10-18
Rated 5 out of 5 by from Deep fit, no bobble head for me! Nice deep fit, nice fitting chin strap, I ordered oval large and it fits perfect!! It feels hotter that my previous but I’ll be hot knowing I have stepped up my safety game!
Date published: 2021-10-06
Rated 5 out of 5 by from Great fit! Great features and looks smashing. My husband surprise me with the OneK for my birthday.
Date published: 2021-10-05
Rated 5 out of 5 by from Love the fit! I am so happy I found this helmet. I am looking forward to my first ride with it. But the fit is perfect. The option for round or oval sizing made all the difference in getting it right.
Date published: 2021-09-03
Rated 5 out of 5 by from No more giant pumpkin head! Helmets are, of course, not one size fits all. For my very oval shaped head, One K comes through with the long oval shape! I no longer look like a hot air balloon trotting around my barn. It also is lightweight and looks classy.
Date published: 2021-08-16
Rated 5 out of 5 by from Great helmet We are very pleased with the quality of this helmet. My daughter says it feels great. Loved the storage pouch as well
Date published: 2021-07-26
Rated 5 out of 5 by from GreT features and fit well Purchased recently and fir true to form. Wanted added features for daughter heading to school.
Date published: 2021-07-26
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Q & A
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How to Shop for a Helmet
Have you ever struggled with the idea of buying a helmet online? Watch this video for tips & tricks on getting the right helmet fit.

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