My son is thin and these hold everything in. ...
591408
My son is thin and these hold everything in. However, the top band lets the water in whereas the the leg holes are tight enough to do their job.
808301
Great belt for the skinny kiddos needing something to give a little.  The elastic has stretched thin very quickly on a couple so that's why 4 stars.
778512
Dickie pants are a good fit for my slim son. Not sure if they would work for a bigger child.
1593036
bought these for my son who is very skinny and tall...they fit perfectly!
1891258
My son is 9 years old,tall and skinny (66 lb).I bought him the small size,he still have space if he gain weight.
4667891
Perfect for my sons shirts and daughters dresses. I like that they r thin. Also easier for them to hang stuff up themselves since it doesn't slide off easily
14087
My son is tiny so I was skeptical. These are appropriately long, skinny and stretchy. We should be able to get 2 years out of them as undershirts. 2 day shipping, again, FTW!
1782222
My son is a hard fit and these worked perfect for him. We bought them for the school choir but now he wears them for waiting tables and we wash and dry these in the washing machine and they are holding up. Plus I don't have to iron them. Win win.
4353279
My son is a thin, athletic 10 year old boy and this brand (size 10) fits him perfectly. Most other brands are too big in the waist and legs.
1001697
Theyre very thin. Even for my tiny pup. Barely holds any pee. Does the job youll just run through more of these.
1235509
My son looked great in these. Fit well hes skinny the draw string function was a must. He looked great and never lost his shorts.
4797007
My son is quite thin and tall.  These are a perfect solution at an affordable price.
2137894
I use these every time I was my bras.  They hold up well and can hold multiple bras, but none of my bras have padding to them, so I can't judge that, but they work well with my 34H maternity bras!
3186346
My son is a skinny 6 year old at 40 pounds avg height. While these are not something he would want to keep on all day, they fit well enough that there were no complaints.
910133
My 4 year old is slim for his age. These underwear fit him perfect. (Size 4)
2624601
My son has been wearing these for about three years, he is very slim and the 27 in waist and 32 inch inseam fit him perfectly
1116113
My 2.5 year old is tiny. He weighs a whopping 25 lbs due to chemo and we have a very hard time finding underwear that don't sag in the waist or legs for him. These fit perfectly.
That being said, if you have a heavier child these probably will be on the small size post wash and dry.
Also- Ryder isn't Featured as a main character and my son was a little bummed with that.