The straw spout is made from food grade silicon. It is a soft mouthpiece that has a 5mm diameter opening that allows for thinner type foods like purees, plain yogurts, and rice cereals.
It is interchangeable with the original spout that comes with The Food Bottle. One size fits all.
WARNING: Keep all components not in use out of the reach of children. Always use product with adult supervision and never use feeding teat as a soother. Check food temperature before using.