We have the footmuff now for about 3 months and have used it during really cold days (at up to minus 10 ° C). Our little one was really getting nice and warm it. One advantage is that you can pull thanks to the Zugkordels the sleeping bag up. So then looks really out only the face, and everything is being protected. In the sub-zero temperatures we had our baby still a snowsuit dressed in footmuff; Now at temperatures between 0 ° -10 ° C, it has only one jacket in addition, that's enough about her clothes at the foot bag. The footmuff fits into the Teutonia Mistral S.