Been browsing Paci's R Us, and found these well cute pacis with pawprints on them.
In the part where you choose from the list of colours and 'add to cart'. There is an option for it either to be a NUK 5 or a TEAT 4.
I'm a bit confused.
What is teat 4?
What is the diffrence between teat 4 and NUK 5?