The North Face - ThermoBall™ Traction Mule V. Color Phantom Grey Heather Print/TNF Black. Low Stock. $59.00. 4.8 out of 5 stars2 left in stock+8Brand NameThe North FaceProduct NameThermoBall™ Traction Mule VGenderMen'sColorPhantom Grey Heather Print/TNF BlackPrice$59.00Rating5Rated 5 stars out of 5(2500)