ichnfinde the idea of a knife in credit card design and size very well! did not know that there is something like this and handing it to me the same as I gained time to time need a knife and then I usually plug in none. other knives take much space wegbin pants and this is really mega stowed in the wallet. Processing is ok, design is good. I think if you do 100 times audeinander and assembles it will probably eventually be broken but firstly what costs the thing already? and secondly in the size can not solve the other one. blade is sharp enough and very stable for the sleek design. ne of my strong buy recommendation