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One K (#23567)

One K Defender Helmet Liner

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(Because you have supplements on AutoShip, you save an extra 10% on this and all other SmartPak tack & apparel items!)
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(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
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.

Ride Along Item Ships free with a qualifying item. 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.

Free Ground Shipping
Free Return Shipping
SmartPak Return Policy - YouTube

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 45 days of the purchase date. Please ensure the item you're returning is in like-new condition with original packaging. For full details on our returns policy, please visit SmartPak.com/Returns.

Customize your program:
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FINAL SALE - This item cannot be returned or exchanged.

FINAL SALE - This item cannot be returned or exchanged.

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on every AutoShip order (Details)
You'll love our AutoShip because it's:
  • Focused on happy riders - never worry about running out!
  • Easy to snooze or cancel online, anytime
  • Totally flexible - edit your order as often as you'd like
PLUS! You'll save % on every shipment if you order this product on AutoShip
You'll love our AutoShip because it's:
  • Focused on healthy s, because consistency is key
  • Easy to snooze or cancel online, anytime
  • Totally flexible - edit your order as often as you'd like
  • Your VIP pass to FREE SmartPerks benefits
PLUS! You'll save % on every shipment if you order this product on AutoShip
Price for one-time shipment:
AutoShip price: Price per shipment:
AutoShip Savings applied
Start date: Customize your program for estimated start date. View estimated schedule
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Zone Map
Begin with the zone for the state you are in. Dates shown on the map indicate suggested start and end dates for Fly Stoppers™ shipments. You may want to shift a zone if your elevation or microclimate is unusual, or if you fall on the border between two zones. You can start anytime during the fly season. Choose "Year Round" for climates that have flies all year, and start now.
Program Type Shipment/Application Frequency
Regular Programs: Ships every 4 weeks. For low to average fly levels, frequent manure management and few neighbors.
Premium Programs: Ships every 3 weeks. For high fly levels or weekly manure management or nearby livestock.
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Before purchasing this item, please note:

  1. This item can't be shipped to a PO Box.
  2. This product will be shipped directly from the manufacturer using a shipping company.
  3. The freight company will call you to schedule a delivery appointment.
  4. If SmartPak and the shipper are unable to contact you within 7 business days of the product shipping out, your order will be cancelled.
  5. You may be liable for any storage fees due to missed delivery appointments or requests for dates beyond the standard delivery window.
  6. When your shipment arrives, you will be responsible for inspecting the shipment to make sure it's complete and that no items are damaged.
  7. Before accepting the shipment and signing for it, you must record missing items and damaged items on the receipt, and take pictures of any damage.
  8. SmartPak and the manufacturer will not be able to assist you in filing a claim if you haven't noted any damage on the receipt. You will be responsible for filing any claims.

Shipping is not available to Alaska or Hawaii for this item. We apologize for any inconvenience.
Unfortunately, we cannot guarantee that customization items will be delivered by Christmas. If you're adding customization to this item, please note the estimated arrival date in your cart.
Order within and have it by Shipping to
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All customized items are personalized in our Plymouth, MA facility, and it looks like this item is currently out of stock in that location.
Please call 1-800-461-8898 to order this product.
Lowest Price Guaranteed
We're bringing you this product at the lowest price allowed by the manufacturer so you won't find it cheaper anywhere else. This also means we can't apply any further discounts or promotions.
We're sorry this item is currently out of stock. Our team is working to get it back in stock asap.

SmartPerks 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

Learn more about SmartPerks

*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

The One K Defender Helmet liner is a smart purchase for the One K rider! Purchase an additional liner so you can have a spare when one needs to be thrown in the washing machine. Our liners also provide ultimate flexibility for growing children or women who wear hair differently for schooling and show! Three shells make up all sizes. These helmet liners are also great to help adjust the fit!

Imported.

  • Provides the ultimate flexibility for growing children or women who wear hair differently for schooling and show
  • Buy a liner that is either smaller or larger than your One K Helmet shell to adjust the fit
  • Machine washable
  • 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 within 45 days of purchase
    • Hassle-free returns up to 60 days from purchase
  • PLEASE READ: Delivery Guidelines
Ingredients
(Maintenance Dose = )
Ingredient Amount
Sizing
Available in sizes S-XL
What Customers Say:
Reviews
One K Defender Helmet Liner is rated 4.3 out of 5 by 7.
Rated 1 out of 5 by from Doesn't correctly attach to helmet - useless Was really excited about this, but sadly the snaps that go into my helmet do not stay put and the liner appears a bit longer than my helmet. I got an XL liner to go with my XL helmet. It is virtually useless.
Date published: 2021-02-24
Rated 5 out of 5 by from Fits great, So good to have one to put in washer when all sweaty! I put in washer bag with riding clothes. Fits my K Defender helmet.
Date published: 2020-02-27
Rated 5 out of 5 by from Perfect replacement! I bought this so I could wash my original liner and not loose out on a few days of riding. LOVE how fast it was delivered (ordered on Wednesday night after dinner and it was on my doorstep when I got home from work 2 days later on Friday)!
Date published: 2018-10-13
Rated 5 out of 5 by from fits great, washes great I bought a replacement liner as the one that came with my One K helmet was pretty gross from summer sweat/makeup. I swapped this out in seconds, took the old one home and threw it in the wash and its as good as new. happy to have a fresh one on hand when i need to swap them out.
Date published: 2018-08-29
Rated 5 out of 5 by from Love the removable liner I love the removable liner on the One K helmets. Our summers are very humid, so I purchased a second liner to always have a clean/dry one ready for the next ride. I'm planning to buy one the next size up for winter so I have room for my thin fleece headband. Very happy with the liners and the helmet.
Date published: 2016-07-27
Rated 4 out of 5 by from Amazing Quality I bought this to put in my OneK helmet I bought the XL size and It was a little too big for my head so I ordered this liner in the size large so I wouldn't have to put my hair in my helmet every time I rode. It works amazingly and is super easy to put it in the helmet and to take it out of the helmet.
Date published: 2016-06-06
Rated 5 out of 5 by from easy to wash!! I bought this extra liner so I would always have a "fresh" helmet. It's so easy to wash, I throw it in my washer and let it dry on my porch. It dries in no time and my helmet no longer smells! Great investment. I love it.
Date published: 2016-06-02
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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.

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