“I’m an on the go girly so you best believe I need my cup to be spill proof when I’m balancing my keys, Diet Coke, chapstick, purse, tumbler, and phone in my hand. Not to mention I’m always running late so I need to be able to slam that sucker into my passenger seat for take off. Hasn’t leaked once. I know I can depend on this tumbler more than my last two ex’s. 10/10”