The patent pending Pocket MAG(TM) is the only universal spare magazine holder that discreetly clips to your pocket, belt or waistband. One Size Fits All! Discreet Lightweight! Easy Draw! Patent Pending! Now you can carry any back-up magazine inconspicuously with the Universal Pocket MAG(TM) by Techna ClipA(R). Slide any size of magazine into the Pocket MAG(TM) and clip it on to your pocket, belt or waistband. Draw your back-up mag with a simple pull while the Pocket MAG(TM) stay where you left it. Compatible with all single and double stacked magazines 22LR .380 9MM .357 .40 .45 10MM. The Pocket MAG(TM) uses a patent pending minimalistic retention device to hold any size magazine and utilizes guide rails to reduce friction so that your magazine is easy to drawn when needed.