✨ Key Features:

• Built-in One-Click Vacuum Compression: Equipped with an integrated compression assist device, you can easily extract air from the main vacuum pocket with a single click (powered by USB). No external air pump needed! Compress your clothes and belongings to save up to 50% more space, expanding your packing capacity from 30L to an equivalent 60L—matching the storage of a 20-inch trolley case.
• 5cm Expandable Design: The zipper-expandable layer instantly transforms the backpack from a slim 25L daily commuting size to a spacious 30L travel size, adapting to your changing packing needs.
• 180° Opening for Easy Organization: The main compartment opens fully like a suitcase, making it simple to pack, unpack, and access your 5-7 day travel essentials.
• Dedicated 17-inch Laptop Compartment: A padded, secure slot protects your laptop from bumps and scratches, ideal for business trips and remote work.
• Wet/Dry Separation Pocket: A separate waterproof pocket keeps toiletries, wet clothes, or dirty shoes isolated from clean items, preventing odors and messes.
• Premium Waterproof Oxford Fabric: Durable, water-resistant Oxford material shields your gear from rain, spills, and daily wear, ensuring long-lasting performance.
• Anti-Theft Design: Features a secure combination lock to keep your valuables safe, plus ergonomic, breathable shoulder straps for all-day comfort.
• Multiple Color Options: Available in Black, Grey, Army Green, and Blue to match your personal style.

📏 Product Specifications:

• Item No.: 7797
• Material: Waterproof Oxford Fabric
• Dimensions: 32cm (L) × 15cm (W) × 49cm (H) (expands to 20cm in width)
• Weight: ~1.75kg
• Laptop Compatibility: Up to 17-inch laptops
• Capacity: 25L (daily) → 30L (expanded) → 60L (with vacuum compression)