I bought these for my 5 month old daughter who is on the big side (17lbs), but listened to the reviews that said the boots sized large so to size down. I got size 1-2 and they were way too small. I think they might have fit, but I couldn't get her foot in past the back of the shoe- it's like the stitching prevents you from putting them all the way on. I'm going to return these and get the ones that have velcro on the back.