Arc'teryx - Calidum 5 Panel Hat. Color Arctic Silk. Low Stock. On sale for $40.00. MSRP $50.00.. 4.6 out of 5 stars4 left in stock+3 colors/patternsBrand NameArc'teryxProduct NameCalidum 5 Panel HatColorArctic SilkPrice$40.00MSRP: $50.00Rating5Rated 5 stars out of 5(48)