High quality materials all brushes are made of silicone. 100% BPA free food grade. pollution-free. total protection of the environment. Best brush for you Our silicone cleaning brush repels unpleasant odors and stains unlike sponge and nylon brushes prevents the build-up of nasty stains. which is healthier for your family. You don't have to worry about smelly sponge hairs anymore. it can replace all the bottle brushes in your home. Versatile cleaning tools The silicone cleaning brush is designed to reach every corner of the bottles to clean them properly by removing residue. Use the silicone brush to keep your dishes. bottles. sports bottles. baby bottles. infusers. bottles. thermos. tubing. draws milk. clean kitchen appliances and more. but not suitable for beer/wine bottles. Grime-Free and Scratch-Free The soft, flexible silicone bristles of our water bottle cleaning brush are tough on guns. but gentle enough to leave your favorite slime. glass water bottle. pitcher. clean, scratch-free blender and glassware. Durable and practicalThe strong bristles of the brushes always keep their shape. and won't break or fall off. It can even be used for hot cleaning (up to 230C). and also dishwasher and microwave safe.