Ariat Boots exclusive ATS Max technology supports and cushions as you move, promoting good posture and reducing fatigue. Comfort technology is what we love about Men's Ariat Boots! At the core of ATS Max technology is the Ariat ATS Max extra wide shank, plus forefoot and heel stabilizers for support and reduction of foot fatigue and injury. EVA mid-foot support reduces metatarsal stress. The ATS Max footbed has a low-friction surface to protect from heat build-up and blistering. Shock-absorbing gel cushion reduces skeletal impact stress on knees, hips, and lower back. Cupped footbed chassis offers torsional stability. Grueling, dirty farm and ranch work has nothing on your Ariat Sierra boot. This tough, but comfortable work boot features a brown leather foot under a fancy stitched blue leather shaft. Moisture-wicking, fatigue-relieving gel cushioned removable ATS footbed. Quality Goodyear welt. Updated square toe profile. Imported.