Standard booster seats for children tend not to fit too well on the Roadster seats, but when the kid is buckled up they pretty much work. The much bigger problem is how to fit one in the trunk and close the lid. If I keep it in the car, adult passengers have to sit with it on their lap. Anyone got a suggestion please or know of one that fits in the trunck? This type of thing:
Booster Seat that fits... Check out the BubbleBum. bubblebum.us I bought it for when my grandkids come to visit. It packs down flat. It worked perfectly when they were here for Thanksgiving and I have them in my trunk now all the time and don't even know they are there.
Or you could use the one that you have and get the luggage rack from Sector 111 and tie it on the back when you need to.