I use the #2 when I make a big mug of chai. The tea leaves expand so much during steeping that my tea infuser ball was too small. The holes in my tea infuser ball allow many chai mixes to slip through the mesh. This is especially true of the Mayan Chai, not so much for the Vanilla Chai. The Mayan Chai has spices that are fairly powdery, so the t-sac is perfect for making sure the Chai makes it into your mug. I haven’t tried any of the other sizes. Great product.
