70/71 cm from seam to seam in the seating area. Top from frame to frame 74 cm.
I can also highly recommend it, especially for 2 under 2 🤣

I passed it on - unfortunately it was too bulky for us - difficult to manoeuvre in narrow passages such as the garage and cellar. We now have a smaller/finer one that is easier to manoeuvre.

The space inside is approx. 80 cm long, 44 cm wide and 25 cm high. It's great, I wouldn't give it away again. Especially the roof is worth its weight in gold and that it can be pushed like a child's scales.