Expandable Laptop Backpack 25-40L with USB Charging Port

Expandable Design

Capacity before expansion is 25L (45*30*15cm); Capacity after expansion is 40L (45*30*25cm); Weight: 1.0kg. You can adjust the packing capacity by unfolding the zippers and buckles as needed. Two thick handles are placed on the top and side for easy switching between backpack and suitcase.

Large Capacity & Multiple Compartments

The backpack has multiple compartments, layout and expansion. Open the backpack 180 degrees, so convenient to take things out. The thickly padded laptop compartment protects your laptop and is large enough for a 17inch laptop. Multiple compartments can also store magazines, iPads, A4 documents, wallets, books and more.

High Quality Water Resistant Material

The backpack is made of water-repellent polyester fabric, which is scratch-resistant, tear-resistant, easy to clean, stylish and durable. Light rain or water drops do not penetrate the inside of the backpack. Smooth zippers, excellent stitching make the backpack more sturdy, and thick linings add texture to the backpack.

ODM&OEM service

Custom design development (shape, functionality, color)

Brand-specific customization (logo, tags, packaging)

Flexible size adjustments (from small organizers to large suitcases)

FAQ

1. How long has Kaidaer been in the bag manufacturing industry?

Kaidaer has been a leading bag manufacturer since 2005, operating as a subsidiary of Kairong Group, with over 19 years of expertise in crafting high-quality bags.

2. How do you ensure product quality?

We have a dedicated 10-member QC team with extensive experience in bag production. They conduct rigorous inspections at every stage of manufacturing, from raw materials to final packaging, to guarantee excellence.

3.Do you offer OEM/ODM services?

Yes! We specialize in OEM (Original Equipment Manufacturing) and ODM (Original Design Manufacturing). Whether you need custom designs, brand logos, sizes, colors, or materials, our team will bring your vision to life.

4.How long does production take?

Lead time depends on order size and complexity. For standard orders, it ranges from 30–45 days after sample approval. Rush orders may be accommodated upon request.

5.What certifications do your products have?

Our factory adheres to international standards and holds certifications like ISO 9001 and SGS, ensuring compliance with global quality and safety requirements.

6.What payment methods do you accept?

We accept T/T (Telegraphic Transfer), L/C (Letter of Credit), and other secure payment methods. (Specific terms can be negotiated.)

7.Do you provide samples?

Yes! We offer paid samples for design validation. Once the order is confirmed, sample fees are refunded.

8.Do you offer after-sales support?

Absolutely! We stand by our products and resolve any issues promptly. Contact our multilingual customer service team for assistance.