I have Riley (he's 8 this year) in a kokotat dry suit in a youth Med. Hoping to et 2 more seasons out of it, but maybe not. It is the tropos, and does NOT come with a neck gasket. I added a petite woman's gasket to it myself with aquaseal. Drykid= warm and happy kid. He loves that he can get right out and swim in the cold colorado creeks just for fun.
Extra sport makes drytops pretty small, which I'm sure are a lot cheaper.
(seven two 0)-298-2242