Fly Racing Marker Boots. 600-gram thermal insulation comfort rated down to -40°F. Hydroguard™ breathable waterproof membrane. Exterior leather upper for extra longevity and wear protection. Durable rubber sole to minimize wear against running boards. Reflective side and back panels for maximum visibility. Reinforced toe and heel for high impact. Slip-resistant rubber sole for exceptional traction. Oversized padded boot laces for easy tightening. Double stitched for extra durability.