The North Face - Borealis Sling. Color Steel Blue Dark Heather/Steel Blue. On sale for $50.10. MSRP $59.00.. 4.5 out of 5 starsAdd to favorites. 0 people have favorited this+10Brand NameThe North FaceProduct NameBorealis SlingColorSteel Blue Dark Heather/Steel BluePrice$50.10MSRP: $59.00Rating4Rated 4 stars out of 5(520)