Temperature: -50°F / -45°C Features: -Height: 10''/25.4 cm -Waterproof synthetic leather and water-repellent ripstop nylon. -Seams sealed at the vamp with the H2O Seal process. -Hook-and-loop straps or lace-up boot with barrel closure. -High visibility reflective inserts. -Extra lace provided (A8368 and A8379). -Removable triple-density insulated liner with stabilizing arch (sizes 13-8). -Removable felt insole insulates and locks in moisture. -Super light, waterproof, flexible and insulating EVA base. -Synthetic rubber sole adherent and stable. -Replacement markers: A4513 B76