I have been looking around trying to find a big boy cup that still prevents those occasional spills. I was given the chance to review the Bornfree Twist'NPop™ Straw Cup and it's perfect.

"BornFree® BPA-Free plastic, 14oz. (400ml) Twist'NPop™ Straw Drinking Cup features a hygenic pop-up straw mechanism for comfortable mess free drinking. 14oz body interchangeable with BornFree® bottles and cups. Suitable for 12+ months."
I love this cup because it prevents spills, is easy to clean and is BPA free.
This cup can be purchased at many retailers and online HERE.