Those of you with Thunder Thigh babies, take heart! These will fit your child too! I was dubious as to the size and stretch claims, because I was paying retail price and didn't want my child to outgrow these within 2 months!
When I got them, I put them on my arms, all the way over my biceps. (Before you think this is a HUGE deal, I'm just a normal sized 5'3" woman, my pythons cannot compete with the Hulkster!) I was satisfied that they would fit, thankfully. My 100th percentile weight (35 pounds) & height (38" tall) 2 year-old son fits his BabyLegs perfectly still, and I purchased them when he was 6 months old! They have quite a bit of give, and only leave the same amount of skin-pression that athletic socks leave on us.
One of my favorite uses for these now is to help bridge the summer and fall season weather, where it's in the 50's in the AM when I send him to school, but then it gets into the 70's by lunchtime. I throw the BabyLegs on under his Woot! purchased XXS youth athletic shorts, and he's a happy camper. I do find that on his more active days, that these will slouch like the 80's legwarmers, since he can't be bothered to pull them up.
I'm in for a couple more pair, because this is half the price I paid from the manufacturer, and there's something intrinsically adorable about a kid wearing these! We'll get the sports prints, but if the Woot! buyer can get the Firetruck design next time, I guarantee they'll be the first one to sell out. Get the matching socks too, there's something about a baby in matchy-matchy that makes you want to cuddlesquish them. (In a good way, of course!)