Hiya. I'm the answer to all of your bottle's hopes and dreams. A real dynamo, a git r' dun type, the perfect fit. You're probably thinking: "Wow, you're amazing," "You're literally going to solve every problem I have. It's a miracle." And you're correct. Features: Firm bristles conquer stubborn residue Flexible mini brush cleans straws and hard-to-reach crevices 2-in-1 versatility - integrated mini brush stows in the handle Non-slip comfort grip