Humanized design, lightweight, weighing only 0.55kg, – – shape fits the back curve, ergonomic, even force, decompression, and breathable, preventing slanting shoulders. Fashionable double slider zipper, smooth closure, long-lasting use. Selected soft and breathable fabrics, comfortable and wear-resistant. Comfortable handheld, easy to use, comfortable, and durable. Triangular reinforcement, strong and durable, reinforced shoulder straps. Adjustable shoulder strap, convenient and practical. Made from nylon material, measuring 11.8*16.5*5.9 inches, this custom backpack for training courses with customized logo. Usage Scenarios: Office supplies, school stationery, corporate promotions, trade show giveaways. Customization available: Print your logo or customize packaging and color schemes. Product Highlights: Portable, durable, practical for daily use.