Perfect for first responders in active shooters scenarios. Designed to be worn over the shoulder(left or right side). includes fully adjustable shoulder strap with hawk-tex non-slip pad and quick-release waist strap. Holds (6) 223/M-16 mags, (3)in front (3)in back or (4) mp-5 9mm mags. Made with blackhawk's 1000 denier nytaneon material. Great for keeping accesible in your car trunk or as an extra source of quick ammo..