The 6” Outback lace up boot is constructed with 100% full grain uppers which are chosen for their natural strength and durability. Featuring a speed lace system so you can achieve a precise fit is the key to comfort in our popular lace up option. Comfort inspired padded tongue and double padded collar allow for you to cinch up your boots as tight as you want without causing discomfort in these areas of the foot and leg. Utilizing double, triple and quadruple stitching on this work boot ensures that durability is at the top of our priority list when crafting this classic. Light as a feather and tough as nails this boot gets its attributes from the air cushion midsole which is created with millions of tiny air bubbles that promote energy return and shock absorption. TPU outsoles make this boot Electrical Hazard rated to ASTM standards.ility.