100% Waterproof breathable bootie construction combined with waterproof leather keeps feet bone dry; Versatile Traction: OmniTrax Interchangeable Sole System for customized traction on the fly; easily change soles as conditions or terrains demand; 400g of 3M Thinsulate insulation combined with Korkers Thermal Stack Technology, for the ultimate warmth during intense winter conditions; Durability: 360 degrees rand provides superior support and protection without sacrificing flexibility; Protective: Composite toe meets ASTM & CSA testing standards and Lenzi puncture resistant plate protects feet from sharp objects; Added Safety: Unlike overshoes and 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; 9" height / 4lbs 3oz per pair; Sizes: 8-15 (half sizes 9.5,10.5,11.5); With Ninety Degree sole