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Britax Romer Advansafix i-Size Car Seat - Storm Grey

Code: WN9F4Xax
  • £243.99
  • RRP £299.00
Item In Stock | Free Next Day Delivery from £50
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Britax Advansafix i-Size Car Seat - Storm Grey

Britax Advansafix i-Size Car Seat - Storm Grey is a state-of-the-art i-Size car seat from Britax. With ISOfix connection points that attach directly to your vehicles ISOfix anchorage points, you'll be away in no time. What's more, it's suitable from approximately 15 months to 12 years old. It's based on the award-winning Advansafix IV R car seat, and goes one step further in safety. As well as being approved to the new i-size regulation R129, this car seat offers premium safety thanks to the extended harnessing up to 21 kg for toddlers and the XP-PAD for older children.

Why Should I Choose Britax Advansafix i-Size Car Seat - Storm Grey?

You'll love that the Britax Advansafix i-Size Car Seat gives your little one maximum safety every single day. The Advansafix i-Size has been developed and approved to the new i-Size standard R129 and is also equipped with advanced safety features.

Maximum Safety With SecureGuard

SecureGuard provides the best possible protection for your little one. This feature helps to protect your child's delicate abdominal area by adding in an extra 4th contact point to the three point seat belt. By keeping the lap belt in an optimal position over your child's pelvic bones, SecureGuard helps to reduce any abdominal force by up to 35%.

Advanced Side Impact Protection

What's more, your child will benefit from the Advansafix's Advanced Side Impact Protection. This offers superior protection in the event of a side collision. What's more, it reduces any impact forces by minimising the distance between the car and the car seat and then deforms to absorb the energy before it reaches baby.

Extra Comfort & Flexibility

This high back booster offers protection in three different ways. The seat shell provides head to hip protection for your child, especially in the event of a side impact. As well as this, the upper and lower belt guides provide the correct positioning of the seat belt. Lastly, the V-Shaped padded headrest provides safety and comfort for your child's head and neck, and is specially designed to control the movement of your child's head. This can be simultaneously adjusted with the harness from the front of the seat too.

'EasyRecline' Is Convenient For Parents

Britax Advansafix i-Size Car Seat - Storm Grey offers you 'EasyRecline', which is suitable for all ages. This feature allows you to adjust the seat into comfortable recline positions. Even when your little one is in the seat - even without having to adjust the top tether! The V shaped top tether minimises the rotation of the car seat for your peace of mind.


Arguably one of the best features of this i-Size car seat, Flip&Grow allows you to change the seat buckle from a 5-point harness to use with a 3-point seat belt. Simply adjust the headrest and stow the harness in the backrest, then switch the Flip&Grow adjustment plate so the SecureGuard is above the seat, and you're ready to go.

What Are The Specifications Of Britax Advansafix i-Size Car Seat?

Suitable from 15 months to 12 years approximately

76 - 150 cm

Weight: 11 kg

Dimensions: 60 - 83 x 44 x 47 cm

Forward facing i-Size travel

EasyRecline feature for convenience

Flip&Grow allows you to flip from baby seat to toddler seat

Quick remove cover for easy washing

Britax Pivot Link ISOfix System

Advanced Side Impact Protection

Do I Receive A Warranty With Britax Advansafix i-Size Car Seat?

Yes, the Britax Advansafix i-Size Car Seat comes with a 2 year manufacturer’s warranty. This applies to UK Mainland only.


Delivery within the UK Mainland (does not include Northern Ireland)*

  • FREE Next Business Day Delivery (order by 13:00, weekday deliveries only) for UK Mainland orders over £50
  • £5 Next Business Day Delivery (order by 13:00, weekday deliveries only) for UK Mainland orders under £50
  • £8.95 per box surcharge for Specified Weekday
  • £18.95 per box surcharge for Saturday Delivery
  • "Sold out" items are currently unavailable
  • "Direct - Delivery Date To Be Advised" items are delivered directly by the manufacturer according to timescales they dictate. Refer to product page for best guess estimates

*Excludes remote locations where surcharge of £20 per parcel is applicable

*Please note that deliveries to Scotland can take an extra day to be delivered

Delivery to UK Islands & Highlands*

  • £15 per item to Northern Ireland
  • £20 per item to Islands & Highlands (see list below) 
  • £50 per item to Channel Islands 
  • The standard delivery time to UK Islands & Highlands is 3 - 5 working days. 

*We deliver to Western Isles, Scottish Isles, Shetland, Orkney, Isle of Skye, Isle of Man, Isle of Wight, Highlands and Remote Areas

*Remote locations are subject to surcharge of £20 per parcel

*Please note that you will be contacted after order placement with regards the number of parcels required to ship your order should it be more than 1. 


Delivery to Mainland Europe*

  • £30 per parcel, for multiple parcels, multiple charges apply (please see below)
  • The standard delivery time to mainland Europe is 3 - 5 working days depending on geographic location. 

*We deliver to Austria, Belgium, Bulgaria, Czech Republic, Denmark, Estonia, Finland, France, Germany, Hungary, Ireland, Latvia, Lithuania, Luxembourg, Netherlands, Northern Ireland, Poland, Portugal, Romania, Slovakia, Slovenia, Spain and Sweden.

*Excludes remote locations where surcharge of £20 per parcel is applicable.

*Please note that you will be contacted after order placement with regards the number of parcels required to ship your order should it be more than 1, multiple charges will apply. 

*All products by Britax, Graco, Joie, Nuna are restricted from being shipped outside the UK Mainland. Orders for these products with delivery addresses outside of the UK mainland will not be shipped. 

Delivery Timing

Occurs Monday to Friday, generally 9am - 6pm (excluding public holidays). Please note that collections occur Monday to Friday (excluding public holidays).

Please Note

  • If the buyer wants to cancel the order that is already in transit you simply reject delivery 
  • If the buyer accepts the parcel and then cancels the order, the return costs are at the buyers expense 
  • If a delivery is rejected or 3 delivery attempts are made without success the order will be automatically returned to sender
  • Cost to attempt re-delivery of an order is £15 per parcel for UK mainland & £30 per parcel for European addresses
  • Orders travelling outside UK mainland: You may wish to arrange insurance against loss or damage 
  • We may use recycled packaging if the packaging provided by the manufacturer isn't sufficient. Please check contents. Any parcel refused without checking will be subject to £15 returns charge
  • Please note that product warranties are not valid outside of the UK mainland, we will try to help you as best we can with parts and fixes but delivery costs are chargeable 
  • If paying by card over the phone the delivery address must be the same as the billing address so that we can help prevent fraud. (If proof of address can not be provided) 

We offer a 30-day return policy on all non-disposable items that are unused [Consumer Rights Act 2015]. If you are not satisfied with the products you purchased, simply send them back to us unused, in the original packaging and in resellable condition (at your own cost and risk). Include your order number and name. 

Conditions for refunds are:

  • Item must be with us within 30 days of receipt
  • We will repay the amount to the payment method used, eg. paypal, credit card, debit card
  • Delivery costs to return the item will not be refunded 
  • The product must be unused and returned with all original packaging
  • The product and packaging must be in resell-able condition
  • We reserve the right to not reimburse for any used goods 


  • Cancellation and return of special order items and assembled furniture may be subject to a charge for us to re-stock
  • If you do not want to arrange your own return we can do so at a cost of £15 per package and per attempt (UK mainland only)
  • Individual items from bundles or packages are not returnable. Bundles & packages must be returned in full 
  • If an item from a multi item purchase is returned delivery charges will be recalculated and applied to the remaining live order 
  • If need be, we can supply a suitable transport carton at a cost of £10


Return address: 

1 Old Park Farm 
IP13 0LZ

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