【Water-Resistant Material】Made with high-quality, water-repellent fabric, this backpack safeguards your belongings against light rain and splashes. Durable and long-lasting, this material is designed to withstand daily wear 【Spacious Top Opening】Featuring a large top-opening design, this backpack allows quick and easy access to contents. The main compartment is roomy enough to store books, files, or larger essentials, while the dedicated laptop pocket, lined with soft velvet, offers enhanced protection 【Enhanced USB Charging Ports】Equipped with upgraded USB+Type-C ports, this backpack supports both phone and power bank charging. The external phone charging port keeps your mobile accessible while charging 【Breathable Back Support】Designed for long wear, this backpack features a breathable back panel to reduce heat buildup, ensuring a comfortable, fresh feel throughout the day. Its ergonomic shape evenly distributes weight, reducing strain on your shoulders and back 【Additional Features】A survival whistle on the chest buckle provides added security during outdoor activities, while the shoulder straps feature a convenient card pocket for quick access to transit cards or ID Specifications: Model: MR-4076 Material: Oxford Fabric + EVA Weight: 1.38kg Shoulder strap length: 40~90cm