The A.T.A.C. 6″ Shield with side zipper is designed for routine patrol shifts. This boot is ASTM F2413-05 M C/75 I/75 EH PR certified and features a Shock Mitigation System. You can wear this boot right out of the box with no break in period. You’ll feel like you are wearing running shoes because we designed these boots to be fast. Our lacing system and YKK side zipper makes it easy to get into and out of the A.T.A.C. 6″ Boot. The oil and slip resistant quiet outsole allows you to move quietly in any tactical situation. Our antibacterial and moisture-wicking lining will keep your feet comfortable and dry throughout the day so you’ll be ready to keep going even after a long duty shift.