This is a tough nipple that can withstand aggressive nursers yet is soft and pliable. Made with a special rubber formula for long
life and improved pliability. This nipple style must be used with a Little Giant Screw-On Nipple Cap (Sold separately). The nipple
does not attach to the bottle with out separately purchased Screw-On Cap. Nipple is 1in diameter x 3in long. Each.