Nickao: I have all the colors... ...don't ask me why.
The Green one (shorty) is 2.1m and nice and pocketable.
The Blue one is 3.1m and still small. Heck, they are all pocketsized except the red one which is barely so but has a nice clip.

The Green and Blue one measures diameters as well and has the mm/cm increments on one side and diameter scale on the other.
There is also a Black one (discontinued, haven't seen it on the web?) which is the one I use the most, 3.1M and very sturdy. It snags/stiffens some around 160-180cm and then eases up again, don't know why but both my copies (one at work, one at home...) do. The black one has mm/cm scales only and reads off both sides.
The Red one is 6.1m and very handy for interiors and measuring the long stuff. It is a bit bulky for everyday use but I have had use for it.
They do an excellent job and they have improved accuracy on some work with the very swift and easy length/interior measurement.
They are readily available over here and I will pass by the hardware store on Saturday and can check prices for you. Where are you and Dan located?
Best regards, Henrik