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Many climbers or those with a specific purpose to carry heavy Backpacks are always suffering from the heavy weight of their Backpacks . so we could make the Backpacks that not only its own weight but the weight of its load was divided into good and easy to carry. With " compressed Helium gas " in special layers of Backpack . And to calculate the amount of gas in the Backpack to make different Backpack with different usages.

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