A modern, athletic boot designed for first responders, the Nike SFB Field 20.5cm (approx.) Unisex Boot features a breathable canvas and durable synthetic upper with a dynamic lacing system for ultra-lightweight comfort and lockdown. The outsole is equipped with an aggressive traction pattern and internal rock shield for multi-surface grip and puncture protection. Design First responders are athletes in every sense of the word, but their moves are infinitely more vital. To meet their intense physical demands, the Nike SFB was built with the latest athletic footwear technology. Parts of the forefoot are puncture- and laceration-resistant, while the midsole is super-cushioned and extra flexible, ensuring a smooth heel-to-toe transition. The rubber outsole features reverse edges and a slightly raised heel for better grip when walking and running downhill. Fit A dynamic lacing system helps keep the foot in place and maintains a comfortable, customised fit during extended wear. Ventilation The Nike Special Field Boot is made with breathable, quick-drying fibres to keep the foot comfortable in warm conditions.