KEEN - Revel IV Mid Polar. Color Black/Harbor Gray. On sale for $108.00. MSRP $180.00.. 3.9 out of 5 stars+2Brand NameKEENProduct NameRevel IV Mid PolarGenderWomen'sColorBlack/Harbor GrayPrice$108.00MSRP: $180.00Rating4Rated 4 stars out of 5(26)