Gregory Deva 85 Backpack Size Chart
  X-Small Small Medium
Torso Length (in) 14-16 16-18 18-20
Capacity (cu in) 4882 5187 5492
Product Weight 5 lbs, 12 oz 6 lbs, 3 oz 6 lbs, 6 oz

These are general guidelines only, sizes are not guaranteed. But no worries, since at SunnySports we offer our exclusive PFF Guaranty