I'm really interested to hear peoples thoughts on this too. We're also going on holidays and I'm tossing up what to buy. ds uses the arm floaties at swimming lessons (the hard foam type) so we were wondering if we should buy those, or a vest.

I asked the swimming teachers and one said it doesn't matter, as long as it keeps them floating, the other said the arm floaties because the vests keep them totally upright which can be frustrating if they are trying to dog paddle. On the other hand she said the vests are good because their arms are free, so who knows!

Have a fantastic holiday!