I had ordered the slippers on Friday and today they were delivered. I have dressed the same and they fit perfectly. I usually have shoe size 41, but I had read many reviews that turn the foot warmer larger and thus I have my foot warmers had ordered in size 39-40 and finally I have after 1 week cold feet warm again. Many have written that which the sole could be more stable. I think that is the sole for slippers ok. Because there are slippers and thus normally one does not go out. I highly recommend this Slippers recommend anyone who always have cold feet. My husband fits the Größ, moreover, although he has shoe size 43. I will as soon as it is possible to order again, but then equal to 2 times. Once for me and one for my husband. Oh, the delivery went as always fast and super quality and the price is also super.