The leading hiker and Sébastien Yago, the head of the Orgaya walking travel agency, have opted for a hiking backpack with chest and belly belts. As the weight of the bag is at 70 or even 80% carried by the abdominals, such choice is essential to relieve the back and shoulders. It also allows replacing harmful articular shocks on the spine with good muscular efforts distributed on the eight abdominal muscles. The straps also rebalance the weight of the bag towards the body's center of gravity, around the hiker's navel.