A double agent in scrub brush form. This bristle-packed scrubber does its best work out of sight, keeping the insides of your favorite bottles clean, bright, and oh-so drinkable. Reinforced bristles to tackle tough messes. Stores upright for fast, tidy drying. Sturdy-meets-sustainable design. A perfect fit for on-the-go drinking bottles and mugs. Slim, elongated design thats ideal for bottle necks. Replaceable heads extend use while minimizing waste.Sturdy-meets-sustainable design; made of nylon bristles, bamboo and recycled plastic. Stores upright for fast, tidy drying. Replaceable heads extend use while minimizing waste. Slim, elongated design thats ideal for bottle necks. Bottle brush is perfect fit for on-the-go drinking bottles and mugs.