My son is at 40 pounds and will be 4 yrs old soon wearing a 4/5T. What would be the right size for him?
188261
My son is 6 and between 40-50 pounds and wears 7-8 in clothes. He needs the length in the clothes but is really thin and has to have adjustable waist. I bought a size 8 for the suit and it is a little long for him and plenty of room weight wise. But with the sealed neck and zipper ankles it works perfect and well worth the money. A size bigger than his normal clothes worked best for us.
229085
I would recommend a size Large; the Medium will be way too small; the Large was only very slightly large for a 5'4" 125 lb boy
1042536
My son is 4 but can fit 3T or 4T and it's large on him. I think it could prob fit till about 6 comfortably.
95416
I would guess a size 3 would work well but buying a 3 and/or 4 and trying it is the best way to find out, and return the one you don't take of keep them both if the 3 fits and you have the 4 for when he grows into it. Otherwise return both, but the other answers are correct to look at the O'Neill site and make sure the height is right. If it is too loose it will let cold water in and circulate, if it is too tight it will be very painful and useless. It is a great wetsuit for the toddlers, best I ever saw. BD
727097
Our son is a straight 5T pants and shirt. We bought the boys small (4-6) and it fits him perfectly. Even 6 months after halloween it fits just right. If your son is a 6, go larger.
645681
I bought the "junior" size for two little 4 yr old boys...it seemed to be a good fit :) Hope this helps!
1135447
I bought my son this jersey and he is 8. We got him a medium and he has room to grow. I would definitely say a large would be perfect for your son!
37525
My son weighs 46 lbs & is 43 inches tall & it fits him well with room to grow! He loves it & wears it daily! Good luck!
908160
Definitely. It will be big, but will stay on and will fit when he's 4T (perfect) and 5T (more snug).
1303411
My son is 26 1/2 inches and weighs ~16 lbs and he wears the 6-9 month size. I think you want the 6-9 month size for your son, based on his height.
824144
I am 5.8" and over weight. I bought the large. I think medium will be fine for your son.
500185
I would get a 3T. It fits super tight And when they sit down the padding rides up. My son is 36 inches as well and 34.5 pounds. He is 21 months. The 2T was way to tight.
908161
They will be a little big but not TOO big. My nephew is a size 4T and they are just right on him.
317740
my son is 6 and i bought him a size small 4-6 and he weighs 46 lbs and that fit him so if your son is any were like that i would get him the size small4-6 i hope i could be of some assistance
1353055
I would guess yes to the 3T because it sounds like he will have a disposable diaper under. My son is almost 40lbs and the 3T fits well.
869705
My son wore this when he was 5 and still fits good a yr later. I think its too big for 3yr old. 4 may be fine if his head is on the bigger size.
337932
I purchased the costume for my grandson who is 6 and he is over 40 lbs. It was a little big on him so I would say to be safe you may want to get a smaller size for your son. Check on their return policy before you purchase to make sure you will not be stuck with an item that you can't use.