These multifunction hair clips are ubiquitous, unobtrusive, and useful in many circumstances. They won't merit a second glance in most cases but can make the difference between life and death in some situations.
Each clip features a 2mm wide shim and a serrated edge on one side for cutting through soft plastic, rope, cable, or cords. You can also file or sharpen the serrations to a razor's edge if desired.
They can be worn openly if you have longer hair, or slipped into a pocket, car cupholder, purse, waistband, or almost anywhere else. Sold individually.