I bought 6 of these as gifts. Everyone loves them. Some of the comments I received were that they liked the loop on the top for easy carrying, the extra mesh piece that catches seeds, etc. before getting to the mouthpiece, the way that the flip top can be pushed all the way back to stay open if desired, the way that the whole bottle comes apart for perfect cleaning, and the coordination of colors so that if more than one person in the house has the Infusion Pro, it is easy to see which parts go with which bottle. Excellent product. I plan to buy several more.