The Mercharness is a revolutionary new way to carry your fixed blades concealed under nothing more that a t-shirt. It can be used with any knife or small pistol that has a kydex sheath with eyelets. The Mercharness is a shoulder holster made of mil spec parachute cord. Durable. Once mounted can be worn strong or weak-side. Non-metallic and light weight. Moves with the body. No clips or buckles to pinch skin. Enables knife to be drawn without use of tie down. Can be adjusted by the user even when being worn. Comfortable for extended carry.