How many times have you found yourself, all alone, walking to your car in an empty parking lot at night? Pretty scary, especially if their is poor lighting, and not a single person in sight. Often times, you will find yourself reaching for that can of mace or walking with your car keys between your fingers just in case. Design Sponge reports on the a ring that was designed to give women an extra line of defense against assault and attackers. The Subtle Safety Ring expands over three fingers to give the wearer confidence on a dark walk home, while providing an effective way of fending off an attacker.