I bought the XS booties for my baby when she was 4 months old. They still fit and she's 7 months old now - so I agree with the other reviewer that sizing is a bit off but if you go with XS most infants can probably wear them for the first year which is good value. These booties are easy to put on and I feel like they keep my babies feet warm. She wore them in the winter with socks and in the summer bare foot on chilly mornings. She also loves to suck on them so they make a good toy when in need - like on airplanes or car trips. I highly recommend these booties!

We had a pair of these in size M given as a gift that were too big for her. According to the size chart, we needed a size S for our 7 month-old. What we got, however, were some booties three times bigger than the Mediums we already had! I looked at the tag and it clearly said "S 6-10M" These are either mislabled for they are a child's small, not an infant's. I'm not really sure what to put on the star rating, because I'm sure we would love the product if they were the right size.