What size for an average sized 3 1/2 year old boy?
904284
I would say so...My son was 3 when we bought it for him, and he is almost 4 now and still wears it. There is alot of room to adjust the chin straps.
904285
I bought the one shown for my 3 year old grandson and it was a little big but we feel he will be wearing it this coming summer. He loved it so much he wore it even though it was a little big
143309
Yes, we bought these for my son when he was 1 1/2yrs and now at 3 he still uses him. They were a little big at 1 1/2 but they worked well.
79297
Small at a minimum. Medium maybe if he's still growing. They run a little small.
1669263
There is a size chart however I do remember it being hard to find. I have an 8 year old son myself and he wears a Boys Large just fine.
1442386
I think a small would work. I bought mine for my six year old in a large, but he is a big boy. He loves it by the way!
2090272
Same here, my son has had his two years age 2 now 3. you can tighten it and loosen a bit go with the chest measurement for choices between small and medium You will get more time out of it. Works great
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
331056
I would think that he would be a size 1. My son started as an 8 year old in a size 2.
888971
My 3 year old fits great, but I think it may be a little tight for him as he gets older. He's 30 lbs and 35 in tall.
2239720
I think its a toddler small. Fits both of my twin boys. They are 2yrs old. They weigh 25lbs. 34in.tall. If you had to put an actual size to them I would say 2-3T.
594388
I would order medium. The small runs pretty tight. I have a smaller 2 1/2 yo and medium was a better fit than the small.
807285
I would say probably a medium. My daughter wears a 3 1/2, and the medium fits fine.
1945562
Size 2 toddler.Also it depends on height and weight. My purchase fit perfect.
539758
My son is three. He loves it. The vest part is still large enough for him to wear another couple of years and he is an average to tall kiddo.
1031384
I don't think that any size will fit a 3 years old kid. Even the small size is big. I bought a size S for a 4 year old and it was too big, my nephew of 6 years old used it.
100912
My son was a 1.5 and I bought a size 2 and they just fit so I would size up one.
451960
I bought the medium size for my 4 year old who is 36lbs. It fit him well with some room to grow. It may be way too big for your 1.5 year old. I hope this helps.