This is really good and truly super realistic, but there are a couple things that should be noted. One is that the cap is truly a 'real' cap, rather than 'molded' to 'look' real, which makes perfect sense for the 'empty' or 'half-full' version to make them useable, but mine is designed to be a FULL bottle at all times, so the cap tends to inhibit (and make awkward) it's crush-ability a bit. Secondly the label is also quite real (not molded/printed on), which is fantastic for authenticity, but I'm thinking its only a matter time before the 'crushing' of the label will take a toll (begs the question in one's mind as to how much abuse one of those labels can truly take...guess I'll eventually find out). Those things said, this IS a VERY convincing looking collapsible bottle, but the $45 price tag plus shipping is a bit hefty compared to it's usefulness (for me) which is why I don't rate it particularly high. One could easily imagine incredible routines incorporating the use of all 3 versions, but then we're talking $150 plus. In these situations I ask myself "Can I do better in terms of a different effect and/or effects for $150?". When the answer is "yes", I just accept the fact that I made an interesting purchase and move on.
Bottom line, some will love this,...but I don't find it to be my cup of tea....er, I mean...pop.