The triple-stitched Georgia 8in. Carbo-Tec Steel Toe Lacer Work Book is superior to the average work boot in so many ways. Its upper is constructed of SPR leather, which is approximately 3 times as strong as untreated leather and resists abrasions 2 1/2 times better. This boot resists heat, oil, caustic chemicals, barnyard acids and general abrasion extremely well. The boot's ASTM ratings provide protection against 75 lbs. of impact and compression as well as electrical hazard in the workplace. The lace-up design allows adjustment throughout the day for comfort. The Comfort Core® Air Flow orthotic inserts cushion your feet and keep them dry and comfortable during long days on the job. Meanwhile, the heel plug, padded tongue and padded collar absorb shock with every step you take. The Carbo-Tec Mini-lug outsole delivers traction, durability, flexibility and removability, thanks to the Goodyear welts that allow sole replacement. You won't have to buy a whole new pair of boots if the soles happen to wear out after years of use. Overall, this boot is remarkably rugged and protective.