Trunki BoostApak Car Booster Seat, Black/Green

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Product information

With the law requiring all children under 12 years old or 135cm in height to use a booster seat it’s important to have one to hand at all times. BoostApak is the ideal solution, a spacious, hand-luggage approved rucksack which doubles as a booster seat, perfect for car-pooling and family holidays.

The BoostApak eliminates the need to hire a second hand car seat when renting a vehicle on holiday. It also doubles as a dining booster when eating out, and can be used for trips to the cinema.

Featuring a hard plastic shell, fold out seatbelt guides, wipe clean removable cover, ergonomic back padding and ID tag. The BoostApak is certified to regulation ECER44.04 and is suitable for Group 2 and Group 3. It has hi-visibility horns and reflective trim, so your little one can be safely seen when they're using it as a back pack.

Suitable for ages 4-12 years (15-36kg, or up to 135cm)

All our car seats and infant carriers comply with current European regulation ECE R44.04.


  • Under no circumstances should a car seat be used on a passenger seat where there is an airbag.
  • Correct fitting of all car seats and boosters is of paramount importance to make them most effective in the event of an accident. Not all car seats fit all cars and it is important to check for fitting suitability on all cars you intend fitting the seat to, as well as re-checking if you change your car.
  • Always read the instruction booklet which comes with your car seat to achieve a safe and correct fitting, retaining the guide for future reference. We recommend fitting your car seat in advance of first using it.
  • We recommend that babies shouldn`t be left in Group 0/0+ car seats (infant carriers) for prolonged periods.



  • Please make sure that you check the car seat you choose is suitable for your car before ordering.
  • Some of our shops offer a car seat fit test, where a Nursery advisor will test the display model in your car to check that it will fit properly. Please contact your local shop to see if this service is available. Alternatively, please contact the car seat manufacturer who will be able to advise whether their model will be suitable for your car.
  • Click here to find your nearest department store

    Car seats are categorised into the following groups and it is imperative that a category is chosen so the child`s weight falls within the range indicated:

    Car Seat groups:

    Group Child's weight approx. age of child
    0 birth up to 10kg/22lb birth up to 6-9 months
    0+ birth up to 13kg/29lb birth up to 12-15 months
    0+ & 1 birth up to 18kg/40lb birth to up to about 4 years
    1 9-18kg/20-40lb about 9 months to 4 years
    1 & 2 9-25kg/20-55lb about 9 months to 6 years
    2 15-25kg/33-55lb about 4 to 6 years
    1, 2, 3 9-36kg/20-79lb about 9 months to 12 years
    2 & 3 15-36kg/33-79lb about 4-12 years

    Note: some car seats will be approved in two or more groups.

39 x 17 x 39cm
Eligible for International Delivery
Facing position
2 and 3
Isofix compatitble Information Isofix is a system of dedicated attachment points in the car which car seats can be locked into. We recommend checking your car handbook for further information.
Manufacturer's Warranty
1 year
Reclining positions
Suitable From
4 years
Weight Information Unpackaged weight
Weight or height of child
15-36kg or 33-79lb


Click & collect

Free Click & Collect from John Lewis and Waitrose shops for collection tomorrow from 2pm
261 participating John Lewis and Waitrose shops

Standard UK delivery within 5 working days


Next, named or Saturday UK delivery.


Next/named day UK delivery pre-10.30am.


International delivery not available


We want you to be happy with your purchase. If you're not, just return the products to us or to one of our shops. Unless faulty, we'd like this to be within 90 days of purchase. Exceptions apply to certain products - find out more about our refund policy.

Depending on the type of product, you can make free returns via our shops, Royal Mail (or courier collection for large or heavy items), Collect+ or via MyHermes.

Find out more about returning products

Q & As


Trunki BoostApak Car Booster Seat, Black/Green 4.8 5 47 47
A great little seat which will be very useful. Bought this little seat for use in taxi's and while on holiday, and so far it has been very easy to use and carry around. It is rather heavy for a small kid to carry, but not too heavy to be a burden on an adult. My son says it is comfy and you can fit a few toys inside it too, which can remain inside while you use it as a booster. 11 February 2014
Very happy parents and child We bought this for a trip abroad which we haven't yet taken, so it hasn't been tested in earnest. However, our tall three year old is thrilled with it, both as a back pack (although it's still a bit too big) and as a booster seat. It's very easy to use and the fact that you don't have to unpack the backpack in order to use the seat is great! Yes, you could buy a simple booster seat and put it in a back pack and get the same result, but this is a very stylish and fun product. 10 December 2013
Excellent product at a great price and great service. This product was really easy to order online. The registration proicess was quick and , straightforward. I was sent a text to let me know the Trunki was ready for collection, Despite it being the week before christmas the collection process was efficient and the staff extremely pleasant and helpful. 10 January 2013
does the job excellent little booster seat / backpack, son thinks its great and asked to got out in the car straight away to try it out.easily moved between cars and useful storage inside. 16 November 2012
excellent product this is a fabulous product. My kids loved carrying their Trunki's, they held toys for the aircraft, they were clean (unlike seats in hire cars) and they are paid for after one trip abroad (relative to paying for one in a hire car). Makes sense. 30 August 2012
Trunki backpack carseat I bought two for a holiday abroad with a lot of motorway driving. Our two boys (6 & 4) loved them - an immediate hit. They were excellent backpacks as 'carry-ons' for the flight - carrying stuff to amuse the boys. At the other end they were car booster seats. We now have additional seats for our kids' friends or when ours go out with others, plus functional hard wearing luggage for trips. A good buy, although not cheap they appear very well made - the boys have given them a thorough going over and not broken or damaged then at all. 28 August 2012
Trunkie Booster Seat What a fantastic idea. Bought this for my Grandson who loved it. He can get his cars and figures inside and use it as his car seat between his Nannie's and Grandads houses. Very sturdy material and is still perfect one month later. Thank you x 04 August 2012
Brilliant! We bought 3 of these, for our 5 year old twin boys and our 6 year old daughter. I'm mystified that some people thought them too heavy- all our skinny kids coped fine. We had to hire a car seat for our almost 3 year old and that was 6 euros a day, so these seats paid for themselves in one trip. The kids love'em! 04 August 2012
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Car Seats Buying Guide

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