Britax Römer discovery sl car seat - cosmos black

Price £85.00
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Colour: Cosmos Black

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Britax discovery sl highback booster seat is rated 4.4 out of 5 by 43.
Rated 5 out of 5 by from Great carseat Great easy to fit car seat. Easy to move between cars. We now have 4 of them!
Date published: 2018-03-08
Rated 5 out of 5 by from The member of staff who looked after us was very helpful she made sure the carseat fit correctly & made sure we were happy with our purchase.
Date published: 2016-03-09
Rated 5 out of 5 by from Staff member who served me was extremely helpful & she was very knowledgable & answered all of my questions without hesitation.
Date published: 2016-03-08
Rated 5 out of 5 by from Staff were incredibly helpful.
Date published: 2016-02-29
Rated 5 out of 5 by from lady who served us in Huddersfield was lovely and made sure we ordered the correct product. she was honest and personable and told us about her experiences.
Date published: 2016-02-26
Rated 5 out of 5 by from Very easy - good comms
Date published: 2016-01-25
Rated 5 out of 5 by from Great thanks!
Date published: 2016-01-24
Rated 5 out of 5 by from Excellent service, great knowledge of products and fitting.
Date published: 2015-10-26
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Questions & Answers

Can you use just as a booster seat without the high back when the child gets older?

Asked by: Rachael
It is in one piece and supposed to fit the child until 12 years of age (or a certain height that I don't recall without Google). After that they will no longer legally require additional safety equipment.
Answered by: Adele
Date published: 2017-09-13

Hi , my child wights 38kg and is 7 years old . On product specification stays up to 12 years old and max Wight 36kg :( what could you suggest ? Tnx

Asked by: B.
My daughter is 6 and weighs 35lb and it's absolutely fine on her. Hope that helps
Answered by: Lisa
Date published: 2017-09-13

I bought this last night just before closing from your store and no one was there to fit it. I've tried to pull the isofit clips out to fix to the car, but they're not moving. Is there something else I need to be doing? I'm following the instructions on

Asked by: Andrea
You need to release the clip at the front of the seat while you pull the isofix clips out. Once isofix clips are in place pull the 'tape' tight. Do it one at a time. Hope this helps :-/
Answered by: Mark
Date published: 2019-04-13

Hi I have to fit 3 booster seats across my seats at the back, however the middle seat is thinner making it more difficult to fit a seat due to the seatbekt clips positions. Can someone tell me the dimensions of the width of the Base of the seat? Not the

Asked by: Charlotte
Hi Charlotte Thank you for your enquiry. The following information is provided direct on the Britax website for this seat, H x W x D - 67 - 85 x 44 x 45 cm, alongside visual measurements. Also included are user instructions and a vehicle fit guide.
Answered by: Anonymous
Date published: 2017-09-13

Is this seat suitable to be fitted in the rear seat of a Fiesta 2012 model using the existing seat bels

Asked by: Graham
Hi Graham Suitability for an individual vehicle is something we are not going to be able to answer directly. Not all car seats fit all cars. Your car manual will provide fitting guidance in relation to car seats. We have car seat advisers in our stores trained to the highest standards in all aspects of car seat safety. They can talk you through which car seat will suit your individual needs and show you how to fit it correctly using a demonstration car seat (these have been installed in our leading stores). In some stores we can try a seat in your car and even double check one you've fitted*, providing you with the ultimate peace of mind. *this applies to seats purchased from Mothercare with a valid receipt - see our store finder for services provided at each store. I hope this helps
Answered by: Anonymous
Date published: 2017-09-13

Can the Discovery SL be used in a car without ISOFIX? We have two cars, one of which does not have ISOFIX, and wish to move the seat between cars.

Asked by: Ric
Hi Ric 'Soft latch' means it is easier to fit in cars that have their anchor points hard to reach. Usually, the seat has to be set in place and pushed back until the clips click onto the anchor points. The SL version allows you to attach each clip separately. A couple of plastic guides make it easier to get the clips in line with the anchor points. You'll know the seat is secure when you can see a green safety button on the locking arm. At the front of the seat is a strap which you use to pull the webbing attaching the latches tighter into the seat for a more secure position. The occupant is then secured with the seat belt. (There is no five point belt within the chair.) If your car doesn't have ISOFIX, you can use the seat belt to secure the seat on a non permanent basis. I hope this helps
Answered by: Anonymous
Date published: 2017-09-13

Hello, is that seat ll fits on Mazda 3 (2006 year) ?  Thanks

Asked by: Russ
Hello, Thank you for your enquiry. Not all car seats fit all cars. Your car manual will provide fitting guidance in relation to car seats. We have car seat advisers in our stores trained to the highest standards in all aspects of car seat safety. They can check compatibility for you and they can talk you through which car seat will suit your individual needs and show you how to fit it correctly using a demonstration car seat (these have been installed in our leading stores). In some stores we can try a seat in your car and even double check one you've fitted*, providing you with the ultimate peace of mind.
Answered by: donnad
Date published: 2018-01-24

Can you give me the different outside width dimensions for this seat at the base, hip and shoulders please? Thank you

Asked by: Rachel
Hi, Thanks for your query. 26 cm is the narrowest point of the shoulders, 21cm narrowest point at the bottom of the child’s back, 38 cm is from the cover seam at the widest point of the seat shell, 42cm is from the rear of the seat base to the end curve.
Answered by: Kirsty
Date published: 2018-11-26
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maternity fitting and sizing guide

We fit our garments on mums to be so that we fully understand her needs during pregnancy, making sure the clothes look good and are comfortable.

Check your measurements against our size chart to ensure you are buying the right size.

Remember that we are all different shapes & sizes and sometimes we can sit in the middle of a size. Trying a size above or below can help achieve the most comfortable fit for you.

Our well designed maternity clothes are versatile and often suitable for post-pregnancy.

  8 10 12 14 16 18 20
European size 36 38 40 42 44 46 48
dual size guide S M L XL
full bust (pre-pregnancy) 82 87 92 97 102 107 112
full bust 86 91 96 101 106 111 116
dual size bust 86-91 96-101 106-113 111-116
waist (pre-pregnancy) 64.5 69.5 74.5 79.5 84.5 89.5 94.5
Bump circumference (early stages - 3rd trimester) 87 - 96 96 - 101 97 - 106 102 - 111 107 - 116 112 - 121 117 - 126
Low hip (pre-pregnancy) 93 98 103 108 113 118 123
dual size hip 93 - 98 103 - 108 113 - 118 118 - 123
thigh 52 55 57.5 61 64 67 70

mothercare bra band size

inches 32 34 36 38 40 42 44 46
cm 70 75 80 85 90 95 100 105

mamalicious size guide

  EUR XS / UK 6 EUR S / UK 8 EUR M / UK 10 EUR L / UK 12 EUR XL / UK 14
Bust 86 90 94 98 102
Under Bust 68-72 73-77 78-82 83-87 88-92
Hip 91 95 99 103 107
  See the Full Size Guide

sizing guide for babies & children

So no matter if you are looking to buy newborn baby clothes, sleepsuits or nightwear you can ensure you buy the correct baby clothing based on the baby's weight or height. If you are looking to measure your babies feet, check out the mothercare shoe sizing guide.

Please refer to the guide below to help you find the size that is right for your baby or child.

premature / newborn sizing

Size 3lb Premature 4lb Premature Tiny Baby New baby up to 1 months 1 - 3 months 3 - 6 months 6 - 9 months 9-12 months
Height (cm) - - 50 56 62 68 74 80
Weight (kgs) 1.4 1.8 2.3 3.4 4.5 6.5 8 9 -
Weight (lbs) 3 4 5 7.5 10 14.5 17.5 20 -
Hips (cm) 3 4 5 7.5 10 14.5 17.5 20 -

girls & boys clothing sizing

Size 12 - 18 months 18 - 24 months 2 - 3 years 3 - 4 years 4 - 5 years  5 - 6 years 6 - 7 years 7 - 8 years
Height (cm) 86  92 98 104 110 116 122 128
Chest (cm) 50.5 53 55.5 57 58.5 60 62.3 64.5
Waist (cm) 51 52 53.5 54 54.5 55 57 59
--> See the Full Size Guide

footwear sizing guide

The Mothercare Baby Shoe Sizing Guide is a handy print out that will allow you to position your little one, (if they stop wriggling!) onto the foot outline, giving you both UK and Euro sizes. With a 3 point fit test and points to ensure you are getting an accurate foot measurement, the Mothercare shoe sizing guide is a must.

Mothercare also have a handy baby & kids clothing size guide, so be sure to check the chart before making any baby clothes purchases.

See the Full Size Guide