Insulated Backpack Cooler for $26.99! Reg. $50 This post may contain affiliate links or sponsored content. See Disclosure Policy. Amazon It is hiking season and so check out this deal on Cooler Lunch Backpack! You can grab it for $26.99 (Reg. $50)This is water-proof, insulated and lightweight! This comes in 3 colors as well! Grab it while you can !