[CrazyWookiee]

I have a Bride Stradia for my passenger seat, and I'm also the Bride Seller for Canada.
The Bride Stradia is definitely snugger/tighter than the regular FR-S seat.

I can only recommend a few things:
- First try to see if there's a Bride Japan retailer in your area. Where you can go and try out the seat. Most will have an area or a few seats for demo or trying out before you purchase.
- Go to the Bride Japan site and check the measurements for waist/width size. Every seat there has a measurement for what is suitable to fit inside certain seats. For Stradia II, It would be up to a 36" waist size. Anymore and I'd probably go to a Euroster or Digo II if reclinability is a priority for you.