These teats are compatible with all medela bottles (note - wide-base collar is required).
Made in the USA, excellent quality.  replacement wide-base medela teats are available in both slow and medium flow rates.

Medela provides the most technologically advanced, superior quality breastpumps and accessories to parents around the world.  Medela is the only company to develop products based on research by the world's leading lactation experts, and are the number one choice of healthcare professionals and healthcare facilities worldwide.