A simple palm knife design hand cut from 1/2" thick acrylic.  These can be sharpened to where you can shave your arm with them, but they do not come that way.  Sharpening them opens the pores in the acrylic so it will be fluid bonded quickly.  If not sharpened, the acrylic comes fire sealed, and can be sterilized. Pick a fun wrist strap color from our array of paracord colors.