This is starting to drive me crazy. He fits just fine in the Britax Booster, but he keeps wiggling himself down, and I'll look back and the seatbelt is around his neck! We've had numerous serious talks, but it just doesn't work - he keeps doing it. My older son didn't do this when he was in a booster so I am kind of at a loss.
I really don't want to buy a special big kid 5pt. harness, but this is making me really nervous. I thought about getting one of these: http://www.onestepahead.com/catalog/...oductId=529755 but the reviews are mixed. Some parents say it makes the booster seat slide around. It might be okay for a road trip (which we have coming up), but not for around town.
Any feedback on the footrest or ideas to keep him from slouching?