Supplied with matching adapters that the seat unit is mounted in no time. Since it takes longer to remove the original seat from the frame.
The adjustment of the seat in the rest position is very simple and fast and is very well accepted by our daughter. Good is also the "extended" sun canopy, but that brings a lot more shade. Since you can also align in both directions of the seat now, child never has to actually look directly at the sun. But that change not going with sleeping child on board!
The Schulte straps are adjustable in height, not sewn to the back like the old Zapp in a fixed position.
The only "disadvantage": The buggy is now no longer so ultra compact when folded, the seat unit is taken out there and you have 2 items in the trunk. However, because the seat is rather flat, you can safely put on top of him, even in small trunks simply flat.
For us, a very successful product expansion, absolute buy recommendation.