The travel backpack is expandable, and its dimensions vary from 30 * 15 * 29 cm to 30 * 15 * 59 cm. The volume varies from 18 to 27 liters and can be adjusted as needed.

This Roll Top backpack is made of water-resistant, durable material and equipped with waterproof zippers. The padded back panel ensures a more comfortable and pleasant journey. The adjustable buckle and zipper on the roll top protect the interior and provide extra volume.

With the bidirectional USB charging function, you can charge your mobile phone at any time during your journey or bike ride without affecting the use of your mobile phone.

Extremely comfortable - Ergonomic back system with breathable padding on the laptop backpack and shoulder straps to reduce stress during travel. The travel backpack is easy to carry. Perfect for commuting, air travel, work, and business trips. Large capacity and well-organized - The casual daypack has a spacious compartment and a padded compartment for tech gadgets, roomy enough for clothes, daily essentials, a 15.6'' MacBook/laptop, tablet, and accessories.

Multifunctional - The multifunctional bag is not only a carry-on daypack, but also a perfect school bag, laptop backpack, travel backpack, commuter backpack, and everyday backpack for men and women.