We had this internal / summer sleeping bags now has two sizes of companies and now I buy the third size, because this sleeping better at lengths sit as the sleeping bag liners from Alvi! (Of which I was really disappointed!) In this one, you can open the zipper from both sides and sitting in the neck / chest area absolutely great and close properly from (as opposed to the Alvi-parts that are so baggy and too far, that the child up to the chest exposed). Last summer we actually used it as a single sleeping bag, as it was so warm and it is then sufficient. As I said, I have just one more in the 3rd size ordered, because other brands have somehow disappointed. Can the only friend!
