The North Face - ThermoBall™ Traction Mule V. Color Gravel/Gravel. On sale for $45.30. MSRP $59.00.. 4.7 out of 5 starsAdd to favorites. 0 people have favorited this+5Brand NameThe North FaceProduct NameThermoBall™ Traction Mule VGenderWomen'sColorGravel/GravelPrice$45.30MSRP: $59.00Rating5Rated 5 stars out of 5(67)