Our Casabella Bottle Brush is beautifully designed and is the perfect companion for your reusable water bottle. The long handle is perfect for reaching the bottom (and hard to reach interiors) of larger sized bottles with wider mouths. Not ideal on slimmer or narrower neck water bottles as it is difficult to get the brush in and out of the bottle but also works great on tall glasses, vases, and pour-over coffee makers. Durably constructed and built-to-last.