Bright colored caps make it fun and easy to personalize your 9oz glass beverage bottles.  Perfect for beverages, snacks, or other precious items you want to keep clean. You can convert your 4oz baby bottle into a snack container and your 9oz baby bottle into a juice container as your child grows. Features: BPA free Safe non toxic materials Dishwasher safe Includes 4 per pack Mix and match colors with your Lifefactory bottles!