The bobble looks unlike any of the other bottles I tested. I tested is the Bobble Sport, a 24 ounce bottle in a transparent yellow color, which looks very sleek. The bobble sport comes in a seven colors and is shaped so it fits comfortably in your grip. I went running with it and also took it to the gym a few times. I love that the Bobble has a built-in carbon filter. You can fill it up anywhere — the kitchen tap, a drinking fountain, etc. and it’s purified before it hits you lips. The bobble is very easy to carry, too. The loop by which to carry it won’t hurt your fingers because it’s quite big. Bobble is free of BPA, Phthalates and PVC. The bobble sport retails for $9.99.