Forb Silicone Bottle Brush is BpA-Free, Phthalate-Free and PVC-Free. Don't Call it delicate. Even if you have a black thumb, this is one flower that won't die. Forb's petals are made of super-tough silicone, which is far more durable than regular nylon bristles and won't scratch your bottles. Imagine that! And see the thingy on the bottom? That's a built-in nipple cleaner. Use Forb with one of our countertop drying racks and you might just turn into a bottle-cleaning pro.