The Kitchiny Silicone Bottle Brush is the perfect blend of functionality and quality you need to clean those pesky, narrow containers your hand cannot reach into. With its 12.5-inch long, non-flexible steel shaft and rugged 2-inch silicone bristle head, this brush gets deep down into tall, narrow containers as small as 1 1/8-inches wide, including insulated water bottles, flasks, thermoses, baby bottles, vases, and skinny glassware. Non-scratching, flexible bristles keep their shape and always leave your delicate glassware completely scratch-free, while the ergonomic, ribbed handle ensures a secure grip with soapy hands and can double as a cleaner for stubborn dirt and grime. Dishwasher safe. Heat resistant up to 400°F. Available in a variety of colors.