5.11: Speed 4.0 6。5.11 Tactical 12497 Speed 4.0 6 Boot Mens 8 Black 019 Leather Nylon Duty Boots Experience elite performance and comfort with the 5.11 Tactical Speed 4.0 6\" Boot. Engineered for law enforcement, security professionals, and outdoor enthusiasts, this boot combines the durability of a duty boot with the agility of a running shoe. Featuring the 5.11 Heat Deflect system and Force Foam cushioning, it is designed to keep you cool and responsive during long shifts on hot pavement or rugged terrain. Brand: 5.11 Tactical Model: Speed 4.0 6\" Boot Style Code: 12497-019 Size: Men\'s 8 US Color: Black (019) Boot Height: 6 Inches Upper Material: Polishable Full-Grain Leather and 1200D Nylon Key Performance and Tactical Features 5.11® Heat Deflect Technology: An innovative insole layer designed to deflect radiant heat from the ground, keeping your feet significantly cooler in high-temperature environments. Force Foam® Heel Cushioning: Provides high-impact shock absorption and energy return, reducing foot and leg fatigue during extended patrol or tactical movements. ASTM Slip & Oil Resistant Outsole: A rugged rubber outsole with professional-grade traction for superior grip on slick, oily, or uneven surfaces. Ortholite® Footbed: Features an open-cell foam insole that offers long-term cushioning, moisture management, and high-level breathability.