I've done a bit more reading about these specific life vests (RAVE Sports Universal Life Jacket). Technically, these are not "life jackets" at all: they're vest-type floatation-aids. That difference is not semantics; these are intended to help you float, not to save lives. I don't know anything about maritime law in either Texas or Washington, but these could not be marketing as "life jackets" in the state in which I grew up (at least without an additional disclaimer that woot is not displaying; woot, I assume you ran this write-up by Legal, yes?)
Someone mentioned a water park and maybe these would be okay for that, but I'm having a hard time justifying these life jackets in any situation, with one exception: if you live on the water, regularly have guests, but do not regularly have guests with infants, the infant life jacket is an affordable option to keep in the shed for the one or two infants that might stop by a year.
As far as I can tell, these life jackets do not turn an unconscious swimmer face-up (except for the infant life jacket). That's a key feature of any life jacket, even one used in calm waters within visual sight of shore. It doesn't matter how strong of a swimmer you are under normal circumstances: if you end up in the water, your circumstances have deviated from "normal." If a canoe flips, for example, the chances of getting bonked in the head are high enough that you'd want a life jacket that would keep you face-up: it doesn't matter if your body is floating if your face is in the water. Might be faster to locate your corpse instead of waiting for it to re-float in a few days, but that's not really the primary goal. Remember too: if you are an adult on the water with children, if you are injured in whatever circumstances landed you in the water, the children need to be forced face-up, possibly for an extended period of time, possibly while panicking. And if you're not injured, you might still have an injured child, a non-swimming child, a child not capable of swimming to shore, or a panicking child that you are responsible for protecting. In other words, if you think you're okay in a boat without a life jacket as long as the children are wearing life jackets, picture what happens after you all end up in the water: you need to be wearing a life jacket so you can help others in the boat.
To borrow a picture from amazon of an infant life vest, you really want something like this:
See how the "pillow" in the back forces the face up? That's what you want for recreational boating on closed-systems (i.e., if you're in open ocean, you need something better). I grew up withvest-style life jackets that look like these:
One additional advantage of these life jackets is that they adjust more accurately than the style woot is offering today: you simply tighten the strap around the middle of the abdomen. This is especially important for children: the style woot is offering does not adjust enough for the typical child: you need to be able to pull the life jacket up from the shoulders and have the part that wraps around the neck (vest-style) or the "collar" (inflation aids) stay below the chin, or the life jacket will merely keep your child floating eyes-to-forehead above water. Again, the wait to pull dead bodies out of the water is indescribably awful and anything that aids retrieval isn't bad, but that's not the primary purpose of a LIFE jacket. (Growing up, we had small-kid, big-kid, small-adult, large-adult: they really need to fit properly in order to be useful.)
And yes, all our life jackets are that lovely orange; we all have brown hair and at a distance, hair blends into the water. Orange life jackets don't blend into anything (except a pile of orange life jackets when Grandma says the hamburgers are done cooking). Oh, and we have a few of these as seat cushions; in retrospect, I'm not sure what good they would do, but they're nicely sized for the average canoe seat, which is usually rock-hard anyway. Ours were neon blue, but these are sufficiently bright, IMHO. 
When I mentioned the wait to pull a dead body out of the water, I'm not kidding. My family has never lost someone (pray God - and wear life jackets) but I've lived through five separate occasions when the police divers closed the water for 24-36- once 72 excruciating hours (a high school senior who drowned the night before graduation: the ceremony was postponed until they finally found his body and pulled it out; no, he was not wearing a life jacket; yes, it was dark out; yes, he was drunk and so was everyone he was with, which likely impaired their efforts to save him). Wear life jackets. But not these "life jackets." And make sure your life jackets fit and are properly adjusted (loosen completely, pull overhead, tighten chin strip/ties if there is one, then adjust abdomen strap; children and teenagers should have the fit checked by an adult) every time that you put them on.
