This simple water wings are then likely but the best variant of "anti-Untergeh Help". For learning to swim it of course is not suitable, but with them the kids can jump into the water (of course under supervision) to go down without even time alone. For this purpose they are made of rather thick and solid material, so that they keep hopefully much longer, as these parts with polystyrene core - the leaking warn namely already after two use and thus no longer be used. Conclusion: strong buy recommendation for the private pool, the public swimming pool and for de holidays under palm trees ;-)