A. This backpack is designed for casual travel and makes a great travel companion. It features a fresh and sweet style with solid-color patterns, being simple yet fashionable. B. The main body of the backpack is made of Oxford fabric, which is sturdy and durable, effectively resisting daily wear and tear. It can accompany you for a long time even in complex travel environments. The lining is made of polyester fiber, smooth and skin-friendly, protecting the items inside the bag from friction damage. The unique stitching on the bag is a popular element, not only adding a sense of fashion but also enhancing the firmness of the bag body. C. This backpack has a capacity of 20 - 35 liters. It has a large space with a reasonable layout, easily accommodating various items needed for travel. The thoughtful wet-dry separation design allows you to store wet and dry items separately, keeping the inside of the bag tidy and organized. It can also hold a 16-inch laptop, making it suitable for carrying a computer on business trips. D. It has multi-functional features. It is equipped with a USB interface, facilitating charging of electronic devices during the journey and alleviating the anxiety about running out of battery during travel. The carrying system uses an arc-shaped shoulder strap design, fitting the curve of the human shoulder and effectively distributing pressure to reduce the burden when carrying. Even when carried for a long time, you won't feel too tired. It measures 17 inches, with a moderate size that is neither too large and bulky nor too small to hold things, being very suitable for casual travel and daily commuting.