Anyone use cocoonababy from red castle? Is it really good and worth for buying?

I don't have any friends who tried this, but have read a lot of good reviews online. Seems like this product is used in hospitals in France as well. One good thing is that it is portable and can be placed in the crib. The drawback is that it usually only fit newborns and up till around 3 months and baby would probably outgrow it.