The KEEN® Men's Philadelphia 6'' Waterproof work boots take hard work to a new level. These shoes can get you through the longest shifts with a carbon-fiber toe, non-slip outsole and crazy comfort. SAFETY: Meets ASTM F2913-17 SATRA Non-Slip Testing Left and right asymmetrical non-metallic carbon fiber toes offer an unobtrusive fit and are fifteen percent lighter than steel and meet ASTM F2412-11 and F2413-11 I/75 and C/75 Standards Electrical hazard provides a secondary source of protection when outsole accidentally comes in contact with live electrical circuits Barnyard Proof leather outsole resists the damaging effects of oleic acid, urea, sodium chloride and ammonium hydroxide WEATHER-READY PERFORMANCE: Barnyard resistant leather resists the damaging effects of oleic acid, urea, sodium chloride and ammonium hydroxide in order to extend the life of you boot KEEN®.DRY proprietary waterproof, breathable membrane that lets vapor out without letting water in DESIGN: Waterproof and stain-resistant leather upper Contoured heel lock helps for a locked-in feel to reduce heel slip IN-SHOE COMFORT: Compression molded EVA midsole Cleansport NXT™ for natural odor protection TPU shank for midfoot support Removable, dual-density PolyAer PU footbed with aerated pillow-top cushioning DURABILITY & TRACTION: Oil and slip resistant non-marking rubber outsole Heat resistant rubber outsole rated up to 572° F/ 300° C 3/4 Goodyear welt construction for enhanced durability and flexibility under extreme working conditions ADDITIONAL DETAILS: Weight: 36.6 oz Calf circumference: 2.8 in Collar height: 6.0 in Care Instructions: To treat day to day wear and tear, especially on lighter color leathers, it is recommended to use a leather cleaner and conditioner