Polarforce Hiker Black Size 12 It features Vibram Q765 Dual Density outsole with IceTrek, ASTM composite safety toe, ankle and heel support, rubber toe guard, and HiVis reflective trim. Fight foot fatigue and injury with the exclusive RefrigiWear VitaComfort system. Combining the popular hiker style with a multitude of features, the PolarForce Hiker is a versatile work boot that is great for a number of job functions..