One of the most common errors once the child is old enough to use a high back booster – is the belt path.
Above I have shown my daughter using the most common errors. Please please please always make sure that when you buckle in the child – the seat belt is using the correct routing across the child and HBB! It’s so very very important because error in seat belt routing can lead to serious injuries as the booster is not able to do its job properly. 
Therese has completed the ‘Advanced Child Car Seat Training Course’ at TRL (Transport Research Lab) and is a CPD accredited car seat expert. She blogs about in-car safety, car seats, tips, reviews, giveaways and advice. She’s a mum on a mission to change the law and raise awareness. She is also a breastfeeding advocate and gentle parenting promoter who loves cloth nappies, baby-wearing, BLW and co-sleeping/bed-sharing.