Hi.
I've just done this job on my front and back seats. I ordered a set of covers from Ricambio UK. They look great. Had them shipped out to New Zealand.
They are the tie back type. Worked very well on the front seats and look good. I also replaced the foam inside the front seats. The tricky part is getting the top of the back rests to look full. I added a bit of extra foam at the top, which meant taking the covers off and putting them back on. Which I've now done twice. I'm still not entirely happy with the tops and may take them off again to add some padding. Makes it harder to pull the covers on though.
The back seats were more difficult. However, Bambina's built in NZ often seem to have a plywood base, mine certainly does on the seat and back rest. This meant that it was easier to use an industrial stapler and staple to the underside of the plywood base all around the edge. This made the straps redundant except for positioning while I slowly worked round with the staples.
View attachment 146654
Happy with the end result.
Tim