The ‘Sepal’ difference:
1
The tip of the teat is correctly placed close to the junction of the hard and soft palate.
2
The lower profile is shaped to allow the tongue to rest on the inner lower lip, allowing the lips to form what is sometimes referred to as the ‘Special-K’ mouth.
3
The waist is oval in shape to allow the tongue to sit flatter and seal against the cheeks, providing stability.
4
The upper profile follows the ‘alveolar ridge’ and the hard palate.