Super-Stretchable
Teat Section Has An "Accordion-Like" Portion That Enables It To Stretch In Response To The Peristaltic Movement Of The Babys Tongue.

Ultra-Soft Silicone
The Nipple'S Surface Is Very Soft, Yet It Does Not Collapse Easily. Made From Thick Ultra-Soft Silicone Material, The Nipple Has Similar Elasticity To That Of A Mother'S Actual Breast. The Dome-Like Shape Makes Babys Mouth Open Naturally, Supports Its Mouth Softly And Fits Its Lips Gently.