The Caterpillar Powerplant SB Safety Boot features goodyear welted construction and Nitrile Rubber outsole. Durable, strong and sturdy – the Powerplant boot is a great choice for those working in industries such as construction and manufacturing. Goodyear Welt construction delivers a durable yet flexible boot that lasts wear after wear. The boot’s durability is reinforced in its triple-stitched seams, waxed full grain leather (or nubuck leather) upper, and its energy-absorbing outsole that’s heat and puncture-resistant. Strengthened with a steel toe and a shock-absorbing, supportive PVC midsole, the Powerplant’s got you covered if you’re working in demanding environments. Comfort is also at the forefront of this boot’s design – a PU foam footbed provides cushioning so you can stay comfortable on your feet even during periods of extended wear.