The Muck x Bone Collector Men's 15" Fieldblazer Boots is designed for wet, messy work where durable protection and underfoot comfort are essential. 5mm neoprene bootie adds flexible comfort and performance, while breathable mesh lining improves airflow inside the boot. bioDEWIX footbed topcover uses NZYM for odor and moisture control; Self-cleaning calendered outsole grips mud, snow, and dirt.