The North Face - Thermoball Traction Mule V. Color TNF Red Plaid/TNF Black (Wool). On sale for $29.98. MSRP $75.00.. 4.9 out of 5 starsBrand NameThe North FaceProduct NameThermoball Traction Mule VColorTNF Red Plaid/TNF Black (Wool)Price$29.98MSRP: $75.00