FXD WB-6 Composite Work Boot - 4.5" Synthetic Mid-Cut Safety Boot The FXD WB-6 Composite Work Boots strike the perfect balance between lightweight comfort and hard-wearing durability. At 4.5 inches high, these fully synthetic mid-cut boots are packed with premium features that keep your feet safe, supported, and cool in tough conditions. Key Features: DURA900™ Advanced Nylon Upper - Ultra-tough synthetic material built to last NITROLITE™ Phylon Midsole - Lightweight EVA cushioning that reduces fatigue PORON® Heel Insert - Protects against heel strike and increases comfort High-Rebound PU Footbed - Ventilated, anti-microbial and moulded for support SRA Rated Outsole - Oil, slip and heat resistant up to 300°C KPU Triple Thickness Bump Cap - Reinforces the toe area for added durability Composite Safety Toe Cap - Lightweight and AS 2210.3 compliant KPU Exo Skeleton Mud Guard & Eyestay System - Boosts structure and wear resistance YKK™ 10-Gauge Coil Zipper - Heavy-duty for easy on/off convenience COOLMAX™ Lining - Wicks moisture and dries fast Silicone Embossed Ankle Guard - Adds extra ankle protection Moulded TPU Heel with Kick Ledges - Easy to remove and durable under pressure Available in sizes: US Men's 6-14