Multi-functional design: In addition to a dedicated compartment for hanging a water bottle, it also comes with multiple pockets and compartments for storing small items such as phones, wallets, keys, and first aid supplies, allowing for convenient classification and quick access. Comfortable single shoulder strap: The adjustable single shoulder strap design conforms to ergonomics, providing a comfortable carrying experience and reducing the burden of long-term carrying. High-strength materials: Made of high-quality waterproof and tear-resistant fabric, ensuring the safety of items in rainy or harsh environments. Multi-purpose hooks: The bag body is equipped with multiple hooks and fixing straps, which can carry outdoor equipment such as trekking poles and hats, increasing practicality. Stylish appearance: Simple and elegant design, suitable for various styles of outdoor enthusiasts, both practical and beautiful.