Propper Men's STL Tactical Short Sleeve Shirt 96% Nylon, 4% Spandex Imported 96% Nylon / 4% Spandex DWR (Durable Water-Repellent) finish Easy-access dual chest pockets with quiet magnet closure Stretch fabric and underarm gussets for a greater range of motion pen pocket on chest and sleeve Extended shirt tail for a clean, professional appearance Built with magnetic closures for quick and quiet access. These small magnets, although unlikely, may interfere with medical and electronic devices.