M.C.
Well, I'm not sure what those are. But, I will share what I just bought for my kids. I saw this ad in a parenting magazine and then went and researched them online. They are fantastic! You can go on youtube and actually search for "Stearns Puddle Jumpers" and see videos from REAL PEOPLE using them on their kids. That's what I like to see. I like to see real parents putting them on their kids and then showing how great they are. It's really what sold me. More than the official video on the Stearns website. They are Coast Guard Approved and highly recommended. They really seem to keep the kids upright and comfortable. Here's a link to Amazon, but humor me and check out some real videos on youtube. =0)
http://www.amazon.com/gp/product/B003648OQY
Here ya go:
http://www.youtube.com/watch?v=BdeczJyhyH8
http://www.youtube.com/watch?v=SS4_TbPGDK8