Blender Bottle Charcoal Shaker Cup with Flip-Top Lid

For some reason the product description, the outside of the label (the only part you see before buying them and taking the labels off) or even the bottom of the bottles don't say if they're dishwasher safe (Blender Bottles: start mentioning it in the listing and on the outside of the label and on the bottom of the bottle itself -- it's a major selling point that cheaper bottles are openly advertising in their listings, and I almost bought the cheaper ones because they clearly stated it). They are, but you only see that after purchasing and removing the label, and seeing the information written on the back of it. So, anyway, now that that's out of the way, these bottles are great. I'm putting all kinds of powder supplements into my protein shake that never mix up particularly well when stirring or even shaking up without their little whisk ball. But, using this, after only a few shakes it's completely liquefied, no clumps/lumps -- it's the perfect shake every time. No idea what people are complaining about, I never tried version 1, so I can't possibly say which was better. But, these are amazing, imo. If you can't close or open the mouth cover, I honestly feel bad for you -- a child could do it. No leaks from the lid or the mouthpiece on mine. You must have defects if yours are leaking -- I'd contact their customer service. Long story short: I would absolutely recommend Blender Bottles.