In my case The installation has nothing to do with what is presented on the website of Lascal. If we follow their recommendation it becomes impossible to fold the stroller as rails which serve to slide the frame is hindered by the fastening belts. There is only one place to fix the said belts if we want to continue to bend the chassis: it is just above the locking pedal and the brake release. So this very low position "horizontalizes" arms, which backs the board. The consequence of all this is that my daughter is back on top in the bar (éléa the stroller has a full bar as loola strollers instead of two handles). She does not complain but I can see she has a leaning position on the front to avoid the bar. I advanced up the board by placing the pins in the middle hole, I can not go further because of too little space between the parts.
For now I only use the cozy but when I go to use the car facing the road (not back to the road as shown on the site) I will have to put the arm extensions and this time it's me and my husband will be in an uncomfortable position.
Other flats, if the assembly is easy, disassembly needed to find the right position damages the pins because the key provided to tighten fails to dismantle because of the system of "notching" avoiding undesired unscrewing. So use pliers necessary and difficult shot to ask exchange if dincapacité to find a solution.
In short, the product itself is not too bad (2 or 4 pins would spare the well-comers) and the concept is great but the site is a manufacturer can "lie" when the actual suitability.