BUILT RUGGED, TOUGH AND READY FOR THE JOB. VERSATILE TRACTION: Customized traction on the fly; easily change soles as conditions or terrain demand. WATERPROOF: 100% Waterproof breathable bootie construction combined with waterproof leather keeps feet bone dry. INSULATION: 400g of 3M™ Thinsulate™ insulation, for the ultimate warmth during intense winter conditions. DURABILITY: 360ᴼ rand provides superior support and protection without sacrificing flexibility. PROTECTIVE: Composite toe meets ASTM & CSA testing standards & Lenzi puncture resistant plate protects feet from sharp objects. ADDED SAFETY: Unlike overshoes & other safety cleats with straps, the SnowJack Pro's integrated traction design allows for safe operation of vehicles and machinery. TEMP RATING: Comfort rated down to -30 Degrees Fahrenheit. SPECS: 9” height / 4lbs 3oz per pair. SIZES: 8-15 (half sizes 9.5,10.5,11.5)