BPA Free design maintains the durability, clarity and vibrant color of the original Better Bottle * Easy sipping and no spilling with our patented Big Bite Valve design. * Quick Flip Close allows Big Bite Valve to stay clean when not in use and easily flips back into drinking position. * Easy to Clean and dishwasher safe. * One hand usage allows you to drink without tipping. (although it"s possible if you remove the straw)