Tired of grime hiding in your water bottle lid or travel mug straw? This 4-in-1 cleaning brush set is your secret weapon. It's not just one brush – it's a whole cleaning toolkit in one handy stick. You get a U-shaped silicone brush that perfectly fits cup rims to scrub off stubborn stains, a narrow gap brush for cleaning the tiny grooves inside lids, a stiff corner brush for digging out dirt in tight spots, and even a little hook to pry open rubber seals. The brush head rotates 360 degrees to get into all the nooks and crannies. Made from safe, heat-resistant materials (handles up to 176°F), it's durable and easy to clean itself. The handle has a hanging hole for storage. Essential for keeping your reusable bottles, travel mugs, baby bottles, and even kitchen tools hygienic. Makes a super practical gift for anyone who likes things clean!