The best backpack money can buy! Lasts a lifetime. Sells for $315 brand new. It's in perfect condition.

From GORUCK's website:

Our original piece of gear, designed and proven by Special Forces soldiers operating in Baghdad and New York City. Each GR1® takes 4 hours to hand build in the USA, and comes with our Scars Lifetime Guarantee. It thrives in cities, airports, warzones, when rucking, and at all GORUCK Challenges. But no matter what, the toughest part about GR1® is the person wearing it.

Link to website: https://www.goruck.com/gr1/