We already knew this to be bought in supermarkets, there are many years. Children who are made to undergo all kinds of pressure ... all these years, the strand of the outline had been pierced. We looked all over the pool stores and other shops: impossible to recover them. And then, miraculously, the AMAZON offers and more at a great price. It's too much, we: we jumped at the opportunity immediately and commandons 2 right away. I recommend this without any hesitation to those who have a pool!