-Highly durable: constructed from a single piece of rubber, strong seal/gasket
-This product has no bonded seams or edges.
The neck piece is now moulded integrally with the bottles walls
Actual product packaging and materials may contain more and different information than what is shown on our website. We recommend that you do not rely solely on the information presented and that you always read labels, warnings, and directions before using or consuming a product.