is bottled water. Simple? No. Other than looking really cool, every colour bottle contains a different kind of mineral. It'll give your body some help with your brain function (hehe), the immune system, the muscles and the bones.
The bottles are also toys.
"Y knots are thingys that make Y bottles stick together. They fit on the ends of the bottles so you can connect and build just about anything you can think of. Besides being fun, Y knots are cool because they give the bottles a second life, which helps cut down on waste. It's even better than recycling."
The whole concept is great. Visit their amazing website
..its alot of fun!