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Ships within 48 hours · Estimated delivery Jul 24 - Jul 29
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Description
britax harness adjuster strap Britax Maxi Rider Harness Booster NZHarnessed Booster Seat by Britax Safe n Sound Introducing the Britax Safe n Sound Maxi Rider. The Maxi Rider features an Easy Adjust Headrest with Hassle Free Harness and pivoting armrests for extra comfort. Suitable for growing children in Toddler Forward Facing Mode using the in built harness from 6mths to 4yrs (approx.). The Maxi Rider conveniently converts to Child Booster Seat mode using lap sash seat belt, from (approx.) 4 yrs to 6 to 8yrs of
Harnessed Booster Seat by Britax Safe n Sound
Introducing the Britax Safe-n-Sound Maxi Rider™.
The Maxi Rider™ features an Easy Adjust Headrest with Hassle Free Harness™ and pivoting armrests for extra comfort. Suitable for growing children in Toddler / Forward Facing Mode using the in-built harness from 6mths to 4yrs (approx.). The Maxi Rider™ conveniently converts to Child / Booster Seat mode using lap/sash seat belt, from (approx.) 4 yrs to 6 to 8yrs of age (approx.).
Stress–Free Convertibility keeps your most precious cargo securely and safely restrained.
Features:
- Suitable in Harness mode from 6 mths - 4 yrs approx.
- Suitable in Booster mode from 4 yrs - 6/8 yrs approx.
- Active Head Restraint™ (AHR™) Simple to use adjustable headrest designed specifically with deep side wings lined with EPS to shield and protect your child’s head in a side impact crash.
- Slideguard™ Clip In Booster seat mode, the patented Slideguard™ Clip is designed to protect your child’s abdominal area from internal injury caused by submarining. The Slideguard™ Clip is used to position the vehicle lap-belt correctly over the hips and thighs to prevent slumping and submarining.
- Ease of Use Pivoting armrest along with EZ-Buckle™ insert enables ease of entry into the seat, while helpful holders store harness buckles providing comfort for your child’s journey.
- Easy Adjust Headrest With frontal ease of access whilst the child is seated, the easy adjust headrest can be height adjusted without uninstalling the seat. No need to rethread.
- Hassle Free Harness™ The easy adjust headrest automatically repositions the shoulder harness while the Hassle Free Harness™ reduces the risk of incorrect installation whilst growing with your child.
- 2 Recline Positions Offers additional comfort for a sleeping child.
- Practicality in Mind Quick remove cover - no need to remove the harness!
- Comfort with No Compromise Generous trim padding and shoulder pads provide travel comfort for your child.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 18 reviews
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Product Reviews
★★★★★ 5
Good material but bites back
Size: 20 sqft
Very good product for my rear trunk and backseat on my mustang. I would recommend some type of gloves due to the foil itself when placing down will cut up your hands and fingers. Overall good product for its price.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
amazing product
Model: 36 Sqft
actually surprised how great the product is and way better priced then other companies. its sticky and also has thickness enough to cover metal parts on cars. i would recommend 100% just ordered another 18ft for the rear deck and to have some extra! does not smell. easy to install and helps stop vibration.
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Reviewed in the United States on March 10, 2026
★★★★★ 5
No more scrolling. Best price, abundant, does its job.
Model: 36 Sqft, Model: 36 Sqft
I have it under the closed cell foam. It’s great. Just as great as Killmat and all the other butyl rubber products. Let me ask you to do something: look at the people who rated it 1 and 2 stars. No reviews. No pictures. Why? They don’t want to see the most budget friendly product getting sold. That’s some weak business. Rest assured you’ll be happy with this.
Why did I buy both types? Butyl rubber helps the car not be a tin can. It keeps the outside road vibrations out. Closed cell phone keeps your music in. They work best together., Kumbaya, we have unity! We can get along, even in this age in time. The closed cell foam is cheap. You’ll get it to replace the nasty cloth under your carpet. Do the knock test. It won’t help. You need this too. And truth be told, I prefer that it has no name on it. I’m not paying money so you can brand yourself on my car.
Ps: these products go on and don’t come off. Don’t mess up. It’s the same for the competitors and the closed cell foam. One shot. Do it right the first time.
I’m writing this review after I used up my first box and am getting more. Happy returning customer.
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Great stuff, well made.
Model: 36 Sqft
I was very pleased with this product. Very easy to use, flexible enough to conform to the variations of the surface (floor of the car and some side panels), and it stuck well. I topped it with a similar foam product to provide additional sound deadening. The car has not been run yet but the panels are much "quieter" when tapped on vs before with undercoating, felt and carpet. Seems well made and I expect no issues in the future.
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Reviewed in the United States on February 17, 2026
★★★★★ 5
Great quality!
Model: 36 Sqft
Works amazing!! Same quality as the name brand stuff but significantly cheaper.
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Reviewed in the United States on May 19, 2026