Herschel Supply Co. - City Mid-Volume. Color Steel Blue Shale Rock. Low Stock. On sale for $59.47. MSRP $85.00.. 3.5 out of 5 stars3 left in stockBrand NameHerschel Supply Co.Product NameCity Mid-VolumeColorSteel Blue Shale RockPrice$59.47MSRP: $85.00