The sleeping bag is opened in the middle with a zipper, going from bottom to top. So the baby has never the zipper from the zipper at the neck, but always at the foot, where it does not interfere. I bought a 70 sleeping bag that fits my 60cm baby very well. I hope that he will yet again for a while. The sleeping bag is made of thick cotton, the well-heated in summer nights, without overheating. I prefer my child depending on temperatures plus a Body with long sleeves, short sleeves or nothing and it sleeps very well with it.
The only drawback, and there's a star deduction: All sleeping bags of Alvi are white. If the child once filled his diaper to overflowing and the sleeping bag so dirty, can unfortunately also with Cottons not wash out everything again. Of course, the sleeping bag is again hygienically clean but yellow spots can remain. This is of course not so appetizing. It would have been better off if Alvi could have different colored sleeping bags on offer, where you would not see those spots.