I'm looking for a five point harness booster car seat that is a little easier for a 5 year old to get himself out of. He can never push the red button. I know they don't recommend these - so their hard to find but....

I'm pregnant with my 3rd. We'll have to move my 5 year old to the third row of our Suburban when the baby comes - and I don't want to have to crawl back to the third row to unbuckle him every time. I know that's a little lazy on my part but 3 kids....I'll always help him buckle to make sure it's done properly but it would be so nice if he could unbuckle himself. Does anyone have any experience with a booster that is easier for kids to get out of?

Also important to note - my oldest is extremely well behaved and understands the dangers of traveling in a vehicle and not being buckled - so this is something we don't have to worry about (now my second child is a different story!). Thanks for the help!