Material: PP, Silicone Soft, flexible bristles Use for glasses, vessels, feeders, nipples, etc Accesses narrow spaces Bendable handle Hanging hole Long handle silicone brush:This cleaning brush has BPA free food grade flexible silicone bristles. Brush are tough on gunk, yet gentle enough to leave your bottle clean and scratch-free. Not a cheap thin or wire handle like other products. Firm and sturdy handle is easy to hold and use, the hook provided to hang it for drying and storage.