I ordered this carrier for my friend and her two-month-old baby from this store - http://go-mama.ru/catalog/kenguru-perenoska-dla-detey.html. It looks convenient and according to the description, it turned out to be comfortable and very high quality in reality. My friend liked it.
Regarding delivery, I can say that my order was delivered on time, and the carrier was neatly packaged.
Overall, a good store with interesting products for moms and dads.