Performance, stepping up to the challenge, matching the boot to the job, the Dan Post Performance Series ticks all of the boxes. Crafted with Barnyard-Acid-Resistant leather to make it three times stronger and 2 1/2 times more abrasion-resistant than conventional leathers. This offers better protection against barnyard chemicals. Also resists caustic alkali, sulfuric acid, calcium hydroxide, potassium phosphate, oils, grease, salt, urine, manure, lactic and other barnyard acids. Feature 60 Day Comfort Guarantee.