I tried the 3 positions (because in fact the position D "transport" is used only for transport THE TRANSAT and not of the child. The D position is to fold completely flat.
A: Highest position "game" to 13kg
B: Average Position "rest" up to 10 kg
C: Lowest position "sleep" up to 7 kg is only 2-3 months depending on the baby!
When the child can sit and walk alone, you can return the cover: the sewn sling is then below (do not see much)
The child's weight activates a light and natural swing.
In summary I find that there are very positive things (the seat is removable, the cover is washable)
The fabric has a OKO TEX label (qualitative certification of textiles free of toxic products)
The deckchair really suits from birth, can be placed there a little newborn.
And negative (the price is high for what it is, it will not serve long despite its description is not really scalable)
It also pays Babybjorn brand, the catalog provides features beautiful pictures (that's envy!)