Fidlock Twist 450 Kids Bottle + Bike Base The Best Twist You should always carry a water bottle with you while you're riding so you can stay hydrated. The Fidlock Twist 450 Kids Bottle + Bike Base comes with everything you need to set up a new Fidlock bottle on your frame. The bottle has a leak-proof, self-sealing bottle cap with a high water flow valve and optional dirt cover. It features an improved squeeze due to a soft, BPA-free polyurethane. The Twist 450 is also dishwasher-safe and compatible with all Twist bases for bikes. Features Improved squeeze due to a soft, BPA-free polyurethane Leak-proof, self-sealing bottle cap with a high water flow valve and optional dirt cover Magnetically snaps your bottle in place and only releases when you give it a twist Capacity: 450ml / 15. 22 fl oz | Fidlock | Twist Bottle 450 Kids + Bike Base 450, Clear / Orange / Blue | Polyurethane