The Under Armour Fat Tire GTX uses cutting-edge technology to help you tackle any trail. Taking design inspiration from off-road fat tire bikes, these boots are built on a Michelin outsole with a Wild Gripper rubber compound for excellent traction on a wide variety of terrain. A breathable GORE-TEX membrane provides total waterproof protection, and the UA Charged foam cushioning system delivers ultimate energy return and impact protection. The BOA speed closure system uses a unique click and turn dial and stainless steel laces to lock your feet in place faster than regular laces. These boots also feature a Cupron copper-infused sockliner that wipes out odor-causing bacteria to keep feet fresh. Built with composite textile and foam construction, these comfortable boots won’t let anything stand in your way on the trail.
How to Measure:
Under Armour starts with the true foot, which means they measure from heel to toe. That measurement (in centimeters) is then translated into their standard sizes. To find your foot measurement closely trace your entire foot onto a piece of paper and measure from heel to toe. If your measurement is between chart numbers, Under Armour recommend sizing up.