My son is 5'7'' 125lbs, is size small good for him
749096
I'm 5'9 1/2 and about 164lbs and a Medium fits well on me. Maybe this will provide you with some guidance.
749097
I'm 6'1" 175lbs and a medium works for me. I believe it should work for your son.
617262
Consider it a small size. My son is also 5 yrs old it's good on him but he has a small head. I hope it helped :)
749182
my husband is 5'6 and 160 pounds and got the small/medium. It's perfect for him. Note that my 4'6 son is 92 pounds. It fits him except for the small harness which hooks to tree is loose. I would suggest you go to the larger size
2009078
Yes, the small is up to 12 months per the package (and it still fits my 12 month old if that helps).
396733
my son is 5'2", 110 lbs and he should be able to use the "S" size that I got him for a couple more years. You don't want to get it bigger than necessary because it should have a snug fit. Hope that helps.
828824
I bought this for my son for his 4th birthday in August. He's a bit on the small side, too, but it's a great size for him. Hope that helps!
693759
Medium is meant for 5"4 to 5"7 so medium is probably the best fit for him. I'm 16 and 5"11 yet I use medium because they're little and light and being the forward I want to be I think it's best but that's my opinion and one day it'll probably screw me over but yeah medium for a safe nice fit
1024913
My son is 7 and I bought him the small. They have the head measurements for each size listed.
1512808
I bought this for my grandson, who is 12 and about 110 lbs and about 5'4'' and it fit fine. I tried it on myself, 5'3'' and 118lbs and it fit me fine. Sounds like to me, the small may fit you. If any doubt, order the medium only for length. Good luck, I think you will be pleased.
174774
I would recommend a small. My son is 4 and has both the small and the medium and the small fits way better. My 7 year old wears the medium.
1009435
I think it might be a little small. My son (who just turned 6 and is wearing size 5/6) fits perfectly in this now. In a year it will probably be too small.
811930
Average 7 yr old, I think so. Used it for my sons 5th birthday party and he wears size 7 and it fit fine.
1452304
Well my son is only 5'7" and it fits him pretty well, but i don't feel that it would be too big, the nice thing about amazon is their return policy is one of the best i have ever dealt with.
1242148
I used it for my son who was 7mths old at the time and it was perfect he too was small. It should be fine. It is for up to 30lbs
601504
Given that I have only bought one size, and I am a fully grown adult, it's difficult for me to recommend which one you should pick for your son. But, I did scan through the reviews to see which ones mention buying smaller sizes for their children. I came across a few that would at least come close to your son's statistics. The first one I found was bought for a 9 year old who was "Very tall" for her age, and they got her a medium. The reviewer said that if you buy a size perhaps slightly bigger than you were hoping for, the outfit comes with several straps that wrap around the waist and legs that can tighten it. (which I can confirm is true.) The only part that I've ever found to be loose is the upper chest region. I can't even seem to get that region to stay tucked in when I move around too much in the outfit. Also, another reviewer bought this for her 13 year old son who was 5'7 and 120 pounds and chose large. She said it was "a tad loose, but not too long." This is probably the example you were looking for, so listen carefully: Given the fact that you son is the same age as hers, and is both shorter and weighs less than her son, Medium might be a wiser choice - but remember I can't confirm that, I've never bought or tried any other side except for XL. At any rate, I think whether you pick medium or large everything will be fine. The medium might fit perfectly, and the large, if you decided to get that one, would at least be really comfortable, nonrestrictive to motor functions, and more importantly; he'd be able to continue using it as he ages and grows. So either decision you make I think you'll find good things about either of them. Hope I was of help.
1954871
My son wore this last year and he was 5t and the small fit perfect it was just a little long.
1803942
Yes definitely..my son who is 6 wears on the smallest size n its still a little big on him.. It'sVelcro