The Muckmaster Commercial Grade Boot comes in high (17”) and mid-cut (13”) versions, and is a sturdy work boot for heavy duty applications. A 2mm layer of thermal foam under the foot bed and a cushioning EVA midsole provide maximum foot comfort and stability. With a comfort range of -20°F to 50°F, this is a hardworking boot for tough outdoor tasks. The lugged sole offers superior slip resistance and grip, and the rugged rubber overlay extends right up the calf for full protection. A comfortable Airmesh lining lets your feet breath so they stay dry and happy all day.