The folding bag is of good quality, very light, and compact after compression, the shoulder strap is comfortable, suitable for outdoor activities, carrying a lot of water and food, very practical, and more convenient to travel and hike. Very lightweight. Because it can be folded, the body of the bag is softer. When I put too much things on my back, I feel uncomfortable, and my back is panicked by things. If. The back can be more comfortable and tough, even better.