Our bestselling CamelBak eddy .4L, Space Aliens, ROB BTS LE, features a spill-resistant design and fun graphics to keep you and your kids happy. 100% free of BPA, BPS and BPF. Features: Just the Right Bite: Combining the patented CamelBak Big Bite Valve with a stem tube and shut-off valve, this detachable one-piece component is simple for kids to use and simple for parents to clean. Never Spill: Easy for small fingers to operate. Safe and Easy: Simplified stem and straw are child-safe yet easy to remove for cleaning.