My 2 year old ds is quite happy bobbing about the pool in his swimming ring but I keep being tempted by those swim jackets. You know, the ones that look like life jackets but say they aren't. They're pretty expensive though - £20-£30. Has anyone got one and is it worth the money? Does it really totally support the weight of a 2 stone toddler so you don't have to hold on to them? And would he float upright, with his head out of the water, or lying down (drinking the water, which he trys to do anyway)? Any thoughts?