TheMARK is a multi-purpose tool made from a very tough, light weight, and shatter resistant polymer plastic. It is nearly indestructible under most conditions of use.
The application of TheMARK as a self defence tool is very instinctive, regardless of your prior training.
It also works well for hanging gear, a backpack/rucksack, purses, or used to keep load bearing equipment off the ground while airing it out.
TheMARK is made from ¼” thick polymer and sits flat in the back pocket on a pair of pants, tucked into you vest, the inside of your waistband, or the pocket of a book bag, purse, etc.