1.Material: 100% non-toxic odorless liquid silicone, more safe and clear.

2.Size: wide neck for wide neck bottle

3.Color: high-transparent

4.Hole sizes: small, medium, large for round hole and small, medium, large for cross hole

5.Safety: free of BPA, phthalates and PVC, non-toxic and lead-free

6.Temperature: -50 to 200°C

7.Sizes: S, M and L indicates the frequency of air flow:

  S: suitable for newborn to 2 months

   M: suitable for 2 to 6 months

   L: suitable for 6+ months 

Feartures

1.Soft material emulates breast feeding

2.High-transference and good anti-tear strength

3.Good rebound property when babies' sucking

4.Breast-like nipple encourages babies to open the mouth and feel as breastfeeding