I ordered this device in order to assist me in accurately measuring my body after reading about it in the 4 hour body book.
I found the product to be exactly as described and extremely easy to use for measuring accurately, quickly, and easily. The product shipped quickly, and was an excellent price. At the time I ordered they were on special for five dollars, but I would easily pay double that, it's just that convenient.
A regular measuring tape works fine mind you, again, this is just more of a convenience item. There are a few things that stop this from being a perfect product for me, but they are all fairly minor.
1.) The Nub that locks the tape into a loop can slide out fairly easily. It would be nice if it had a slightly tighter fit so it would not slide off during a measurement. It is easily resolved by adjusting how you do things, but it's a slight irritation.
2.) The tape does not lock at any point like a regular measuring tape. What this means is that you can't lock the tape and take it off to look at an accurate measurement. Honestly, this is very minor because all it means is that you need to get the reading while it is on you. This is what it was designed for though and it only bothered me when attempting to see my waist measurement.
3.) The biggest gripe in my opinion, and the only one that really marks it down for me is that for the extremely obese (like myself) the tape is not long enough to get an accurate measurement around my body. For most, this is a non-factor, but for me it stops me from easily measuring my waist. If the tape was just a few inches longer this would not be a factor. It's a small hindrance though and there is no one else to blame but myself, but it stops it from being absolutely perfect for me.