Proprietary, heavy-duty nylon laminate, shock cord, and polymer brackets provide versatility in size and adjustable retention Secures with button snap closures with two settings, allowing for fit of 21-round 9mm mags (short setting) or 10-round 1911 mags (long setting) Tapered, protruding brackets enable quick and easy indexing and reinsertion of items or magazines Flexible, elastic bungee enclosed in interior of pouches