What is the width of this booster seat?

HI Christina, Thank you for your enquiry. The width of the Recaro Milano Booster seat is 45cm. To view further specifications on this restraint, click on the pink “specifications” tab below the product image online. Alternatively, If you follow the link https://www.babyonthemove.co.nz/store-locations/ this will take you to our online store finder where you can find contact details for your nearest Baby On The Move Store. Here, one of our expert Car Restraint Technicians can assist in helping you to find the right car seat for you, your child and your vehicle. We hope this has helped with your query.