From Tommee Tippee
Leak-proof: The smart two-piece valve stops messy spills (even if they shake, or turn the cup upside down) Soft straw: The straw is made from soft silicone that's gentle on little mouths but still durable and bite-resistantDouble wall insulated: This sporty water bottle helps to keep their drinks cool while they play, learn and exploreFlip lid: Our cups are designed with a handy cover that flips down between sips, to help keep the straw cleanEasy to clean: All pieces are dishwasher safe and BPA free