New Nylon Travel Bags Waterproof Large Capacity Sport Gym Durable Duffle Duffel Bags for Man and Woman

The backpacks suitable for men and women are not consistent because the upper body of boys is longer, while the upper body of girls is shorter but the legs are longer. Choose your own suitable backpack carefully. When loading, the weight of boys should be placed higher because the center of gravity of boys is close to the chest, while the weight of girls is lower and close to the abdomen. The weight of heavy items should be as close to the back as possible, so that the weight is higher than the waist.

Generally, heavy items should be placed on the top, so that the center of gravity of the backpack is higher. This way, the person carrying the backpack can straighten their waist during the journey, and some of the center of gravity should be lowered to allow their body to bend and bounce through trees or climb on bare rock walls. During climbing (rock climbing backpacks), the center of gravity of the backpack should be close to the pelvic position, which is the center point of body rotation, to prevent the weight of the backpack from shifting to their shoulders during the hiking process, The center of gravity of the back packaging can be higher and tightly attached to the back.