GYXXLight Shadow Planet Sky Outdoor Backpack, Dual-Shoulder Design, Laptop Bag, Helmet Hook, Waterproof, Multifunctional Reflective Tape, Cycling,

[Large Capacity & Expandable] The main compartment expands to 18L. It features an expandable stretch pocket that can accommodate a basketball or full-face helmet. It's perfect for everything from short trips to everyday use. [Professional-Grade Protection] A dedicated air cushion storage layer protects your 16-inch laptop. High-density sponge and 2D air cushions effectively absorb impacts, ensuring safe transport of even delicate devices. [Smart Storage System] Equipped with a dedicated aluminum insulated water bottle pocket (keeps water warm for 3 hours) and a separate wet/dry storage pocket. No need to worry about storing wet umbrellas or sportswear. Five reflective elements ensure safety at night. [Comfortable Carrying Experience] The bag features a three-point support system and a magnetic quick-release buckle. It distributes weight evenly and allows you to instantly change the shoulder strap with one touch. Hidden suitcase straps make travel easy. [Environmentally Friendly and Durable] Crafted with a proprietary high-density, water-repellent material. Made with environmentally friendly recycled polyester in some parts, it is highly durable and water-repellent, making it a reliable companion for everyday use and outdoor activities.