Design features of backpacks:
Delta backpack system is the representative of Cerro Torre backpack system, which is composed of arc-shaped support plate, 3D die-casting back pad and other components. Their functions are as follows:
1. The supporting rubber plate adjusted according to the curvature of the body is used to evenly distribute the weight on the back and serve as a booster plate at the bottom of the back pad.
2. The 3D cushion molded by die casting according to the curvature of the back fits the back better and is more comfortable to carry than the traditional sewing cushion.
3. The "S" strap tailored according to the body shape is filled with high elastic neoprene, which is more comfortable under load.
4. The ring-shaped three-dimensional thick waistband is more close to the body and can effectively distribute the weight around the waist.
In short, it is a high-end backpack, and good economic conditions are a good choice ~
As for your purchase price, I can't comment, because I don't know the model you bought ~