Columbia - 18 L Trek™ Backpack. Color Safari/Stone Green. Low Stock. On sale for $39.49. MSRP $45.00.. 4.6 out of 5 stars4 left in stockBrand NameColumbiaProduct Name18 L Trek™ BackpackColorSafari/Stone GreenPrice$39.49MSRP: $45.00Rating5Rated 5 stars out of 5(7)