The North Face - Borealis Sling. Color Solar Blue/TNF Black. Low Stock. On sale for $42.32. MSRP $59.00.. 4.5 out of 5 stars1 left in stock+11Brand NameThe North FaceProduct NameBorealis SlingColorSolar Blue/TNF BlackPrice$42.32MSRP: $59.00Rating4Rated 4 stars out of 5(408)