One K
(#21807)
One K Defender Matte Helmet
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Our Price: Our Price: Sale Price: : $ (%) :
Member Price:
(Members save 5% at SmartPak)
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SmartPerks Price:
(Because you have supplements on AutoShip, you save an extra 10% on this and all other SmartPak tack & apparel items!)
Your Price:
(You save 5% as a member of . And, because you have supplements on AutoShip, you save an extra 10% on this and all other SmartPak tack & apparel items!)
SmartPerks Price:
(Because you have supplements on AutoShip, you can save an extra 10% on this and all other SmartPak tack & apparel items! Enter promo code PERKS at checkout.)
Your Price:
(You save 5% as a member of . Because you have supplements on AutoShip, you can save an extra 10% on this and all other SmartPak tack & apparel items! Enter promo code PERKS at checkout.)
SmartPerks Price:
(Because you have supplements on AutoShip, you save an extra 10% on this and all other SmartPak tack & apparel items!)
Your Price:
(You save 5% as a member of . And, because you have supplements on AutoShip, you save an extra 10% on this and all other SmartPak tack & apparel items!)
SmartPerks Price:
(Because you have supplements on AutoShip, you can save an extra 10% on this and all other SmartPak tack & apparel items! Enter promo code PERKS at checkout.)
Your Price:
(You save 5% as a member of . Because you have supplements on AutoShip, you can save an extra 10% on this and all other SmartPak tack & apparel items! Enter promo code PERKS at checkout.)
Free Shipping (Details)
Save 10% Every Day!
Put your horse’s supplements on AutoShip to SAVE 10% every day on all SmartPak brand tack, apparel & gear.
Ride Along Item(s):
The few add-on items we have can be shipped free by syncing them with your supplement on AutoShip, shipping on a Barn Saver Shipping day, or by having a group of add-on items that total over $75. Have questions? Visit SmartPak.com/SmartPerks or call 1-800-461-8898 anytime.
*At least one individual AutoShip supplement or horse’s SmartPaks must be over $40. Some exclusions apply.
Save 10% Every Day!
Put your horse’s supplements on AutoShip to SAVE 10% every day on all SmartPak brand tack, apparel & gear.
Ride Along Item(s):
The few add-on items we have can be shipped free by syncing them with your supplement on AutoShip, shipping on a Barn Saver Shipping day, or by having a group of add-on items that total over $75. Have questions? Visit SmartPak.com/SmartPerks or call 1-800-461-8898 anytime.
*At least one individual AutoShip supplement or horse’s SmartPaks must be over $40. Some exclusions apply.
Free Ground Shipping
As riders and online shoppers, we know it can be tough to buy a new bridle or pair of boots without trying them on. That's why we moved the fitting room to your living room (or barn)! From breeches to blankets, if you or your horse can try it on, you can return it, free! Just request a return with a FREE SmartPak return label from your Order History within 60 days of the purchase date. And of course, please make sure the item is in like-new condition with original packaging (we said 'fitting room', not 'war room'!).
Putting your horse's supplements on AutoShip helps you take great care of your horse, so we take great care of you with SmartPerks! When you order your horse's supplements on AutoShip, you're automatically* eligible for our FREE SmartPerks benefits, including:
- Free shipping every day
- 10% off all SmartPak brand tack, apparel, and gear
*At least one individual AutoShip supplement or horse's SmartPaks must be over $40. Some exclusions apply. Visit SmartPak.com/SmartPerks or call 1-800-461-8898 for details.
Overview
Why We Love This
One K™ Defender riding helmets boast the perfect synergy between advanced technology and aesthetically pleasing design. This helmet features a polycarbonate and advanced ABS composite outer shell that’s tough but lightweight with a modern matte finish. It’s offered in both an oval shape and a round shape so that you can find the perfect fit for your head. You’ll love that the liner is moisture wicking, quick drying, anti-microbial, and washable to keep you cool, dry, and comfortable. Plus, the harness is padded for comfort and lined with easy-to-care-for synthetic suede to keep you as comfortable as you are stylish. It even has a Fastex buckle that makes taking it quick and easy to take on and off. Additionally, you’ll have plenty of ventilation with two side, two front, one back, and two center stripe vents for a total of seven vents. Last but not least, this helmet is ASTM/SEI F1163-15 certified, so you can have peace of mind that your head is in good heads. With enough features to appeal to those seeking everything a horseback riding helmet could offer, wrapped in a stylish package that traditionalists can appreciate, One K™ has the best of both worlds.
Additional One K Helmet Liners also available!
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!
Additional One K Helmet Liners also available!
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!
- Polycarbonate and advanced ABS composite outer shell is tough but lightweight
- Offered in oval and round shapes for a great fit
- Inner lining is anti-microbial, moisture wicking, quick drying, and washable
- Comfort padded harness with synthetic suede lining and Fastex buckle is comfortable, easy to use, and stylish
- ASTM/SEI F1163-15 certified
- Lots of vents to keep you cool and dry
- Stylish design looks great in the ring
Key Specifications
- ASTM/SEI: Yes
- Oval: Yes
- Round : Yes
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STILL HAVE QUESTIONS? SEE Q&A
-
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
- PLEASE READ: Delivery Guidelines
Ingredients
(Maintenance Dose = )
| Ingredient | Amount |
Sizing
Specifications
| ASTM/SEI | Yes |
| Oval | Yes |
| Round | Yes |
Reviews
One K Defender Matte Helmet is rated
out of
5 by
192.
Rated 5 out of
5
by
Meens from
Stylish comfortable helmet
Been searching for a helmet that fits my oval head and well this not only fits well , but it’s really comfortable and stylish !!
Date published: 2018-09-10
Rated 5 out of
5
by
Mustangjumpoff from
Love this helmet
I have a small odd shaped head apparently and this is one of two helmets that just don't look absolutely ridiculous on me.
Date published: 2018-09-10
Rated 5 out of
5
by
Clav from
Great and affordable Helmet
I just bought my second One K Defender because I loved it so much. One of the more affordable options in helmets these days but still a great looking one. I love that you can remove and wash the liner as well as buy replacements for the liner if needed or if an extra is wanted.
Date published: 2018-09-10
Rated 5 out of
5
by
APrice110 from
My favorite helmet
I sustained a really bad fall in this helmet in May and the helmet protected me better than I have seen many helmets (including my GPAs). I immediately bought a new one of this same helmet to replace my old one and won't consider any other brand. Bonus that it doesn't make me look like an egg head!
Date published: 2018-09-10
Rated 5 out of
5
by
Tara from
Perfect helmet for me
I absolutely love this helmet. It’s beautiful, lightweight, and fits the shape of my head perfectly- like it’s not even there. I’ve had it four months, I ride at least about 3x a week and I can’t find anything bad to say about it so far. I love the removable liner so I can wash the interior and don’t breakout on my forehead. The removable liner is a must for anyone whos head sweats when they ride! I also love the chin strap because it has padded leather on it- looks nice and you don’t even know it’s there. Ive used Charles Owen JR8, Tipperary, international and ovation helmets before- they do not compare.. You get the best bang for your buck too, in my opinion. I don’t think I’ll go with any other helmet. I went with a small and it fits true to measurements for me. I would say my head is more oval than round shape. I it in the bag and don’t bang it around on things/treat it gently when not wearing it and it looks brand new!
Date published: 2018-09-08
Rated 5 out of
5
by
JReyes from
Beautiful helmet - cool and great-fitting!
I bought the long oval in blue and it's beautiful and so comfortable -- cool in the Texas heat and great-fitting! I'm not have any trouble or discomfort with the chin strap, but this is the most expensive helmet I've ever owned:)
Date published: 2018-07-19
Rated 5 out of
5
by
Hadley from
Amazing
I bought this a few months ago and recently was flipped over my horses head and landed straight on the top of my head. Thanks to this helmet I do not have a concussion and the plastic shell did not crack.
Date published: 2018-07-03
Rated 5 out of
5
by
kellycat from
This replaces a One K that I used for 4 years. Took a pretty hard fall and it did the job we all hope for. My old One K was the suede which I think looked a bit sleeker than the matte but my brain and skull don't really care what it looks like. Thanks Smartpak for including a small and medium liner for the medium helmet. I have very short hair and definitely needed the snugger fit.
Date published: 2018-06-11
Rated 5 out of
5
by
Horse mom from
I bought this for my 10 year old daughter after a fall and break of her old helmet. I was looking for something safer and that covered the back of her lower head better. They sent two helmet pads with the helmet and a note saying the second pad was a gift if it created the perfect fit. That additional pad made the fit perfect and now she can grow into the helmet so it makes the price just right for me.
Date published: 2018-06-05
Rated 5 out of
5
by
Fudge861 from
Helmet
Love the way it fits my head! Keeps my head cool when I ride.
Date published: 2018-05-14
Rated 5 out of
5
by
Lori Kos from
Perfect fit!
I can't say enough good things about this helmet. My favorite thing is that it fits perfectly and is so comfortable I don't even feel it!
Date published: 2018-04-19
Rated 5 out of
5
by
Rosie124 from
Great fit!
I have a hard time finding helmets that fit me properly. After searching for a new show helmet, I was happy to learn One K offered a round fit helmet. It's perfect!
Date published: 2018-04-09
Rated 5 out of
5
by
Raylan from
Great value, great helmet
The removable liner and the generous vents make this a great helmet. The price is right, too!
Date published: 2018-03-31
Rated 5 out of
5
by
Nurse41 from
Great looks and nice quality.
My daughter picked this helmet out for her birthday. It looks so nice on her. It will be used only for schooling. It is our first One K purchase, so we hope it holds up well.
Date published: 2018-03-01
Rated 5 out of
5
by
SBurke from
Awesome helmet
Bought this helmet just a few days ago and I'm already in love. I've been riding in a Charles Owen for a couple years now and over time it had stretched out quite a bit to the point where I no longer felt safe wearing it. Decided to purchase a OneK as my next helmet investment and I won't be going back! Much more lightweight and breathable and I don't feel like as much of a mushroom head! I went with a medium round fit and it's perfect!
Date published: 2018-02-20
Rated 5 out of
5
by
kaileymarie from
great fit!
i bought this last week and am very pleased with the purchase, it fits perfect. its so very comfortable and has a very chic design.
Date published: 2017-12-30
Rated 5 out of
5
by
None from
Fits my head perfectly!
As I have never ordered a hat from Smartpak, I was unsure of the sizes! But it fits perfectly and I really like the style too!
Date published: 2017-12-29
Rated 5 out of
5
by
Sammylou from
So comfortable!
I just got this helmet a few weeks ago and love how comfortable! Can’t say how durable it is but I’ve definitely have high hopes for it! :)
Date published: 2017-12-15
Rated 3 out of
5
by
Shanstat from
Nice helmet but strange fit
I love the look of the helmet. But the harness sits very far forward; almost on my chin. The edges of the straps also feel very sharp. However the main issue for me was I felt it didn't cover enough of my head and didn't have the same weight/density/coverage that my Charles Owen does. It's very nice looking but I just don't know how well it would hold up with a fall.
Date published: 2017-11-19
Rated 5 out of
5
by
JulieTullos from
comfortable!
I'm really enjoying my new helmet - it's the first helmet I've ever owned that felt just right on my head. Very secure, and comfortable.
Date published: 2017-11-15
Rated 5 out of
5
by
mftrider from
Fits perfectly
Very comfortable fit. Love the blue color. Added bonus of the removable and washable liner. Very satisfied.
Date published: 2017-10-30
Rated 4 out of
5
by
Akpitts from
Love it
I love this helmet. It is super lightweight and perfect for Florida riding. The fit is also great. My only complaint is that the chin strap leaves black marks under my chin after I ride. I'm not sure if this is typical if these helmets or not. I have another One K Helmet with suede that does not leave marks. Overall great helmet.
Date published: 2017-10-17
Rated 5 out of
5
by
Sidepass1 from
Gorgeous color, great fit.
This is my second OneK. I love these helmets. Comfortable, nice profile, reasonable price.
Date published: 2017-10-14
Rated 4 out of
5
by
Jellybean from
Beautiful helmet
I bought this helmet to have a new schooling helmet, but it is so nice, I'm saving it for showing
Date published: 2017-10-14
Rated 5 out of
5
by
Sutter from
So comfy and great looking!
I had a GPA for 12 years and knew I was really due for a new helmet. I got the OneK and I love it! I have the matte black and dirt wipes right off. The only thing I have to get used to us the chin strap sit a little far forward on my chin compared to the GPA strap.
Date published: 2017-10-12
Rated 5 out of
5
by
missys from
Very comfortable and good looking
Bought this to replace my Charles Owen which i wasn't a huge fan of. I got the oval long and it is SO COMFORTABLE!! Great and beautiful helmet for a fraction of the cost!!!
My head measured 56 cm, so i got the med and large; the medium ended up being a bit big, so we may have measured wrong. I just added a bit of extra stick in foam padding and it is good to go though.
Date published: 2017-10-10
Rated 5 out of
5
by
Kim N from
Comfortable and pretty
I could not believe how comfortable this helmet felt on my head the moment I put it on! It feels secure without squeezing, and it's very pretty and low-profile. I bought the matte finish for schooling, but it's really nice enough to show in. I've never had a helmet with air vents in the front before, and I never knew how much of a difference that would make in keeping my head cool. The back of the helmet allows you to tuck your hair up or make a low ponytail.
Date published: 2017-10-10
Rated 5 out of
5
by
Sterling1 from
Great helmet
This is a very comfortable helmet. I got the long oval version. Seems really well made. Very happy with it
Date published: 2017-10-10
Rated 5 out of
5
by
Boomerang from
Most comfortable helmet I have ever put on
I have owned nothing but Charles Owen's for the last 20 years ... and I love them. But when One K came out with the "long oval" size - I was intrigued as that definitely describes the shape of my head. This is the first helmet I have ever put on that didn't put any extra pressure on my forehead. And .. I love the removable liner
Date published: 2017-10-09
Rated 5 out of
5
by
Katy from
I find the One K helmet very comfortable. I love the removable liner, very easy to keep fresh, especially in the summer.
Date published: 2017-10-09
Q & A
Videos
One K Defender Matte Helmet Review
Katie from SmartPak talks about why she thinks the One K Defender Matte Helmet (http://bit.ly/1F0MsaV) is so smart.
The smartest reason to get yours at SmartPak? Free Shipping Both Ways! At SmartPak.com, you’ll get free shipping every day on all orders over $75 and free returns on all sized items. Just another way it pays to be $mart.
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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