Sistema Blue Shaker To Go 3 "Reasonable, but a couple of design faults" Stephen Maltby 31 August 2015 A couple of design faults. Firstly, there's a recess in the clip down part of the lid, liquid gets caught in this, and when the clip is raised to drink, the caught liquid drips down on to your face! Secondly, protein powder gets trapped in the blades on the underside of the lid, and does not get blended in to the rest of the liquid in the bottle. Both faults make the bottle more difficult to clean. I've overcome the latter fault by not using the blades, and reverted back to using a metal whisk ball from a previous blender. With regards to the first fault - make sure you have a tissue handy! A note from the team Thank you for placing your review and we've passed your comments on to our buying team.