Read more Steel Toecap Steel Toecap with Wide Toe Box. Steel Toecap,keep you from drop, crush and puncture injuries. CoolMAX Fabric made with COOLMAX technology transports moisture away from the body to keep the wearer cool and dry. PORON Xrd A memory cushioning material that can memorize the initial shape and adjust to the best shape during the step rebound, providing continuous coordination and long comfort for the feet. Anti- fatigue insole Anti-fatigue Comfort Technology Foot beds, Contoured Arch Support, Shock Absorbing, to provide maximum comfort and support. Reduce fatigue caused by long working hours. Read more AK227 AK222 AK050BK AK245Z AK232Z Shaft Height 6" 6" 6" 7" 7" Leather Type Full Grain Leather Nubuck Leather Full Grain Leather Nubuck Leather Full Grain Leather Toe Type Steel Toe Steel Toe Steel Toe Steel Toe Steel Toe Size Zip (YKK) No No Yes Yes Yes PORON Support ✓ ✓ ✓ ✓ ✓ Coolmax Support ✓ ✓ ✓ ✓ ✓ Static Dissipative ✓ ✓ ✓ ✓ ✓ Steel Shank ✓ ✓ ✓ ✓ ✓ Safety Standard ASTM F2413-18 I/75 C/75 SD ASTM F2413-18 I/75 C/75 SD STM F2413-18 I/75 C/75 SD STM F2413-18 I/75 C/75 SD STM F2413-18 I/75 C/75 SD