The North Face - ThermoBall™ Traction Mule V. Color Gravel/Gravel. On sale for $44.90. 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$44.90MSRP: $59.00Rating5Rated 5 stars out of 5(67)