5.11 Men's A/T Soft Toe 6in Work Boots - The 5.11 A/T 6in Side Zip is a performance boot built from the sole up to increase performance. The All Terrain Load Assistance System (A.T.L.A.S.) is a force multiplier for those who carry heavy weight on long shifts. The boots were developed to work with your "work weight". Polishable toe Full-length YKK side zipper Slip-resistant high traction outsole Echo Foam (TM) high rebound/energy return PU Force Foam(TM) lightweight PU impact cushioning 5.11 A.T.L.A.S. Technology Water resistant leather upper with high abrasion air mesh nylon Locking ankle eyelet for secure lacing and fit Ortholite footbed Style: 12439ABR