The North Face - Dune Sky Tank. Color Reef Waters White Heather. On sale for $33.52. MSRP $55.00.. 4.3 out of 5 stars+2Brand NameThe North FaceProduct NameDune Sky TankColorReef Waters White HeatherPrice$33.52MSRP: $55.00Rating4Rated 4 stars out of 5(3)