Harmony Insight Isofix R129 Booster Car Seat
484/1784£65.00
*- Save £25.00Was £90.00
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About this product
From car to park, this helps make every trip easier. The Harmony InSight booster grows with them from age 4 to 12. It's designed to fit 3 seats across in most cars. The 11-position headrest adjusts with one hand. Three recline settings help them get comfortable. The V-shape design helps you get installation right first time.
ISO FIX installation provides secure, click-in fitting every time. Suitable for children 100 to 150cm tall. Side impact protection helps absorb force in a collision. The deep, supportive design helps reduce twisting in sudden stops. Clear belt guides help you route the seatbelt correctly. The plush seat pad is machine washable, helping keep it fresh. Suitable for ages 4 to 12 years approximately. Only use in front seat if there's no active airbag.
- Car seat group 2-3.
- Suitable for children from 15kg to 36kg.
- Suitable for children from 100 to 150cm tall.
- Suitable for children approximately 4 years to 12 years of age.
- Seat attachment method: ISOFIX, top tether and 3 point seat belt.
- Integrated ISOFIX.
- I-size certified.
- Only use in front seat if there is no active air bag.
- Side impact protection - helps to absorb the force of a side on collision.
- Adjustable head support.
- Size H69.5, W47.5, .
- Manufacturer's 2 year guarantee.
- EAN: 628922005820.
3.7
10 reviews
70%
Recommended this product
Each review is verified as authentic by our independent third party and we only publish reviews from customers or Argos Testers who have purchased or used the item. Customers are incentivised to submit product reviews as part of a prize draw.
Poor quality build
The real product did not reflected the expectation of quality expected. The image online makes it look valid for the price but it is not. I turned it back as for the same price you can get much better products.
Cool90, London
Good item at reasonable price
We got this for nearly a month and I am still very happy to choose it. Very good price! Although if the design could be improved a bit to support the child's neck when s/he sleep, it would make it perfect.
Linh, 35 - 44, Fenham
Poor fixing to car
Returned this as unable to properly secure car seat in car. It still moved around too much despite being fixed in properly
Car seat 2025, 55 - 64, Northumberland
Exactly what we needed
Bought a month ago as needed a cost effective seat for a growing boy who has outgrown his previous one. Settles on this seat and I couldn’t recommend more. Good isofix fitting, nice seatbelt clip which keeps the belt in place unlike other seats I have used. Comfortable for the boy and light to move around. Also reclines for more comfortable position when needed!
SR0198, 35 - 44, Hertfordshire
May have had a faulty seat
The car seat moved considerably in all directions, despite being fastened with isofix and the seat belt. It did not feel safe. Argos were fantastic at refunding with no quibbles.
Lex2302, 35 - 44, Essex
Excellent
Easy to install and remove and full marks from my grandson he loves it would recommend
Pjcunningham, 65 or over, AYR
Solid car seat
Inserts easy and looks nice
Sj, 35 - 44
Isofix car booster seat
Lovely strong child’s car booster seat. Easy to fit and use
Camel, 65 or over, Poole, Poole, UK
Comfortable and easy to install
My daughter likes it, says it's comfortable. Happy with the price we paid too. It was easy to install isofix.
Tina, 35 - 44, Merseyside
Great sturdy carsest
Really sturdy & looks nice! My 4 year old loves his new big boy seat. I had thought it was leather look, it’s not, but still looks great
Boxsetjunky, 35 - 44, Worthing
Hi Aby,
Harmony Insight Isofix R129 Booster Car Seat 484/1784
Yes this does recline.
This has a Yellow bar at the front of the seat which can be pulled to allow the seat to recline to desired position.
A full instruction manual does come with the car seat.
Thank you for using Q&A
Hi there
The Harmony Insight Isofix Car Booster Seat, has a Yellow bar at the front of the seat which can be pulled to allow the seat to recline to desired position.
A full instruction manual does come with the car seat.
Hope this helps
Thanks for using Q&A
Hello Pigwidgeon,
The supplier has advised the following for the Harmony Insight Isofix Car Booster Seat:
“Since this is a belt-positioning booster seat, the vehicle's 3-point seatbelt is the only mechanism securing both the child and the booster to the vehicle—there are no harness straps involved. The Isofix system is only designed to keep the booster from moving around when not in use and does not play a role in safety. The safety entirely relies on the vehicle's 3-point seatbelt.”
"The primary safety of the seat comes from the use of the vehicle's 3-point lap and shoulder seat belt, which secures both the booster seat and the child".
With regards to the positioning of the seat, they confirm: “Regardless of the position in which they install the booster seat, the vehicle's 3-point seatbelt must always be used. Isofix is optional.”
So you could use it with or without Isofix depending on your requirements.
Thank you for using Q&A.
Hello CuriousDad,
The supplier has advised the following for the Harmony R129 Insight I-Size Booster Car Seat with Isofix:
“ Please note our Insight Booster is made with premium polyester fabric that is machine washable. We also add a thick layer of laminated foam for extra comfort and EPE energy absorbing foam for added safety. ”
Thanks for using Q&A.
Hi Jo.
Harmony R129 Insight I-Size Booster Car Seat With Isofix is suitable for children from 100 to 150cm tall
and approximately 4 years to 12 years of age.
Thanks for using Q & A.
Hello Martine,
The supplier has advised the following for the Harmony R129 Insight I-Size Booster Car Seat With Isofix:
“ To ensure we cover all bases, we've provided a few extra dimensions since we're not entirely certain if the customer is inquiring about their child fitting inside the seat or for installation purposes.
Headrest:
Inside width: 20cm
Outside width: 36cm
Base:
Inside width: 32cm
Outside width: 41cm
Additionally, the widest part of the entire seat would be the backrest "wings," measuring 50cm from the outside. ”
Thanks for using Q&A.
Hi Lance, the Harmony InSight Deluxe i-Size Booster Car Seat is compatible with a Range Rover Velar provided that the vehicles back seat is equipped with a 3-point lap-and-shoulder seat belt and Isofix anchors for Isofix installation. Thank you for your question.
Hi there
I cannot advise if this is compatible as we do not have the full details of the vehicle (model/year)
I can however advise that the Harmony InSight Deluxe I-size Booster Car Seat with Isofix, is ECE R129 compliant for children 100-150cm. Also, Seat attachment method: 3 point seat belt. Integrated ISOFIX.
Hope this helps
Thanks for using Q&A
The small print
*Prices correct as displayed but are subject to change.
The customer and brand answers you’ll see above are submitted independently. As we don’t review these answers, we can’t take responsibility for anything they may say. The responses from Argos colleagues are accurate at the time of publishing. For the latest info, you should check the product page.