Outdoor Research - 20 L Helium Adrenaline Day Pack. Color Titanium/Slate. Low Stock. On sale for $132.00. MSRP $139.00.. 4.3 out of 5 stars3 left in stock+2Brand NameOutdoor ResearchProduct Name20 L Helium Adrenaline Day PackColorTitanium/SlatePrice$132.00MSRP: $139.00Rating4Rated 4 stars out of 5(3)