I just realized you where asking for brand not when is the best time I'm having a mommy brain day....

@hannah.distefano the soft nipple nuk is great but Logan would never take it I used the Munchkin because he liked it better

Nuk sippy's. With the soft nipple.

@harleyquinn11012, he's 10 months he's drinking out of mine but i don't get him a straw because he drinks so fast

I had mine on a sippy after he learned to sip from a straw and when he would take drinks from my drink if I was holding it so about 10-12 months