A little big on my 4 year olds bare leg ...
587284
A little big on my 4 year olds bare leg but fits over a pair of pants.  Performs as expected.
1384872
They fit a tad small, but just about right.  My kiddo is in the 60th percentile for weight, my other who is in the 10th percentile would fit well though.  For "average" I would say get the next size up though.  Mine just turned 4 and the size 4s seem like they will be outgrown in a couple months and even now he could move up a size...
4924000
I wish I could say more to review this product but they are about 2 inches to big for my 3 year old. I got them for $35 so I will keep them and hope she can fit into them next year. But they certainly run large.
2681557
I never realized how much of a difference there was between a toddler 4 and toddler 4T.
Regular Size 4 is huge compared to 4T.  I ended up having to purchase the 4T because
my grandson said,  I will wear these when I am 6.....lol
1291167
Fits about half size too big. My child has slim feet so this may be a little different if your child wears wide or has kind of chubby feet.
They were a gift, but seem like they will hold up well the Velcro seems pretty strong.
358058
I bought these and the size 4 for my 4t wearing little girl based on others reviews. My daughter is 36" tall and 30lbs. The size 6 were baggie in the bottom and a little loose around the waist. The size 4 fit nicely with out being too tight around the legs and waist. She'll be able to get at least 6months out of the 4 and slowly transition to the 6.
684087
thought XS would fit my 3 going on 4 year old. i figured it would be a little big but no its huge!!! and she is tall for her age. i don't think she will be wearing them till she is 7!
2076298
Ordered these for my 6 year old and they fit too big. Also if you look closely the legs are different colors. Not too noticeable but one side seems darker/purpleish than the other side
1498363
Nice color & size for my 4 yr old, the elbow & hand pads are a little big, however leaves room for growth
1769027
The socks stretch out a little too much for my taste (but shrink back when washed/dried again), so they are very easy for my toddler to take off, which can be a good or bad thing on the individual.  They are a little big for my two year old, who wears a size 6, but she'll grow into them.  If pulled up all the way, they cover her calves, but look funny folded over (too big).
4647117
The Legs of these sweatpants seemed a little too long for my child.  She's wearing 12 month size in pretty much everything and these seemed just a little longer than her other pants, but I just rolled the waistband over once and they were fine.  She seemed to like them - very soft for an active winter baby!
4311681
Bought for my 4 year old grandson, who is average size maybe a little on the thin side. The pjs fit fine on the big side a little. Hopefully he can where them again next year
976542
the only person who could wear this item is my 30lbs 4 yr old... and i ordered the large.
295037
it's nice, and soft, just a bit big for my 6 and 3 year olds....
829581
A little large in the leg and a bit extra material in the butt.
4510972
These fit...my toddler. I'm a pretty average size, my calves are not huge, and these won't pull up very far past my ankle. And being that there is lace at the top there is NO give whatsoever. I put them on my
1 year old for leg warmers and they're just a TAD too big. Very disappointed.
84860
I thought I ordered kid version of there for my 4 year old.  When inserting the bottom 2 holes, it looked odd bc it was too big.  But the shoes do stay on my son's feet.