The Fld Day are durable calf-high boots built for mud, brush, and extreme cold weather conditions. The camo neoprene and rubber upper provides a flexible armour for mud, brush, and bad weather. The fleece lining keeps you warm, while the seamless waterproof build allows no leaks, no weak spots, and no excuses. The slip-on, roll-down upper makes them easy to wear and remove. -40 °F / -40 °C rating handles the kind of cold that shuts down engines. The Ground-CTRL synthetic rubber outsole provides a grip that bites back when it’s slick.