I would like to point out that any flotation device in a pool besides a life jacket is just asking for problems. I life-guarded for almost 10 years, the only way I would ever let anything that supported a human floating __besides__ an approved life jacket was if the pool was almost empty (such that the one person got my undivided attention) and if I knew the child to already be a strong swimmer. I highly encourage ev…
My 20 month old has one of these Shark Fins: http://www.amazon.co.uk/SwimFin-3PK-Angelfish-Pink/dp/B001JR... I assume that they are good as he uses them in his swimming classes and with it he can swim a few metres to the side of the pool.
If your child gets tired, this will not help. This looks like it forced the child into a face-down position, and a tired child forced to be face-down in water doesn't seem like a great idea.
As a fellow parent of a 1.5 year old, I'm sure you've heard of latent drowning. [0] This device seems like it could promote the chances of that happening as well.
[0] https://www.parentmap.com/article/how-a-child-can-drown-5-ho...