The North Face - Borealis Sling. Color Dusk Purple Light Heather/Dusk Purple. On sale for $43.70. MSRP $59.00.. 4.5 out of 5 stars+9Brand NameThe North FaceProduct NameBorealis SlingColorDusk Purple Light Heather/Dusk PurplePrice$43.70MSRP: $59.00Rating4Rated 4 stars out of 5(408)