The North Face - Borealis Sling. Color Dark Cornflower Dark Heather. On sale for $41.30. MSRP $59.00.. 4.5 out of 5 stars+9Brand NameThe North FaceProduct NameBorealis SlingColorDark Cornflower Dark HeatherPrice$41.30MSRP: $59.00Rating4Rated 4 stars out of 5(500)