If it dares to be a little bit backwards, it can be so funny in / on the water, almost without help, so finally get off the arm :-) Because with the usual water wings without polystyrene core that did not work with us, in which the position in the water seems not so stable to me.
Shelf life: at us two children are so 1 each year to the swimming pool - there is still no defects. With friends in a short time a close was leaking, so that the air did not stop ...
Criticism: From 6 months does not apply to children with thinner upper arms. Our little girl is now 1.5 and the things slip, no matter how full they are. The Great contrast, had it because they adapted from the outset great. - So consider when buying!