I think the bottle is cute. I love the color and how easy the cap to the spout opens and closes easily without leaking. I also like how the bottle is tall, slender, and has a slim profile, but this will prove to be an issue later. The issue I had with this bottle is that it would not blend my protein shakes nicely and smooth. I find myself shaking vigorously 3x as hard just to get it decently blended. There is always protein powder build-up in the rims of the lid and bottle. At first, I thought it was my protein powder, but it did not matter if I used my regular protein or the Blogilates protein powder. There was always build-up. So then I thought maybe it's the plastic Popflex blender ball not doing a good job. I switched to the traditional wire blending ball with the Popflex bottle, but still had protein powder build-up. Then I realized it was the Popflex bottle shape. It's tall, narrow, and slim. There's not much blending room. You can only shake it up and down which therefore led to the build-up in the top rims. I then used my traditional 12 oz Blender Bottle that is more stout and wide and used the Popflex plastic blender ball and BOOM, I got a smooth protein shake with no clumps and didn't have to shake 3x as hard. So the Popflex blender bottle wasn't a home run for me. There's just not a lot of blending room. It can't go side to side, up and down, and all-around to get a good blend.