(Leaner Friendly) RRR -- Pirate Carry

Pirate Carry - also known as Rear Reinforced Rucksack (formerly known as Rear Reinforced Rebozo Rucksack) is a supportive, two-layer variation of Ruck tied at the shoulder or Ruck with a Candy Cane Chest Belt.
It can be wrapped high, like a ruck, or lower to allow the spread horizontal pass to take more weight off the shoulders.
It is excellent for leaners, but will not stand up to much leg straightening.