The Pigeon Glass Nursing Bottle is designed with careful research into how babies naturally feed. The soft and flexible silicone nipple makes it easy to switch between breast and bottle feeding while supporting your baby's natural tongue movement. A special latch-on line guides your baby to latch properly for effective feeding. The wide neck design makes cleaning simple, and the streamlined shape fits comfortably in your hand. Made from durable borosilicate glass that resists heat, this bottle is safe for use in bottle warmers, microwaves, sterilizers, and boiling water. It contains no BPA or BPS harmful chemicals. This 8.1 oz bottle comes with a size M nipple suitable for babies three months and older. Multiple nipple sizes from SS to 3L are available to match your baby's age and feeding needs, with different hole sizes and softness levels for each stage. The thoughtful design combines safety, comfort, and convenience for both baby and parent during feeding time.