The Mustang Lil' Legends lifejacket is by all accounts the best thing going for kids. Rarely do you see such a consensus of reviews online, and among boating friends. I bought one recently for my 2 year old and I am very disappointed.
First, some background that may be the problem AND the solution. Mustang just changed the style of the jacket, and the changes are more than cosmetic. I bought the newer one (assuming that they were improving on success) but in reality the experience and rave reviews are all based on the old design.
Basically I had 3 problems with the jacket. First, it has absolutely ZERO growth room for my kid. My kiddo is 2 years old (as of a couple days ago) and is 28lbs and is 50th percentile for height and weight. He's not fat, and this is a child jacket (30-50lbs) and I can barely get 2 fingers in around his chest and abdomen with the jacket fully extended. It looks like he'll outgrow it before he even reaches 30lbs let alone 50!
Second issue, and this is a big one. The crotch strap buckle slides freely to its full extension. Tug slightly on it and it loosens. So, it's basically useless. Dangerously useless as it can ride up to it's hearts content and doesn't provide any resistance until it meets the buckle.
Third issue. The chest flotation is too big and when seated it rides up around his neck and ears. Granted he's on the small end for this size range, but see problem #1 for why waiting and growing won't help!
As for fitting, I could have found out that this wouldn't work, but my local west marine only had the infant size and the youth size. The other sizes were CLEARLY not right, so child must be right, right? I needed it quickly for boating so I ordered it with quick shipping from Amazon. Now, I have to figure out if Amazon will take it back and go through the hassle of shipping it back.
I still have faith that the old style legend jacket is good, so I'm going to see if I can pick up one (or two?) of the old ones before they're all gone.