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25L-40L Everyday Transformative Backpack

The Lightest Transformative 25L - 40L Backpack 


Backpacks in the 40L range are usually bulky and heavy for everyday use. This lightweight backpack fits 25L in its original form and can expand to 40L when needed.

Great for everyday light packing for work or school, versatile enough for weekend gateways, international travels, backpacking or hiking. 

Product Highlights:

Durable and Waterproof

Ergonomic back pad for proper airflow convection. Helps transfer heat evenly to avoid a sweaty back. 

air convection

Interior pockets to fit up to a 16-inch laptop and keep you items organized
Bkacpack Pockets


50cm X 40cm X 5cm (Flat)

60cm X 40cm X 17cm (Fully expanded)

Weight: 2lbs

Main Material: Nylon

Lining Material: Polyster

Our Guarantee
30 day money back 100% satisfaction

We want you to be happy with your purchase. That's why we offer 30 days refund on all our products from the day you receive the product. If you are not satisfied with your purchase, return the item and we will refund you. 


Due to high demand please allow 5 - 16 business days for your item to arrive on free shipping options. 


Customer Reviews

Based on 14 reviews
Della L

Feels high quality and looks good, im confused on how to change the styles though, hope theirs instructions.

Nicolas B

The backpack is excellent, there is no smell, has arrived in a fabric bag, very roomy and dense. Delivery in principle fast, the seller extended the protection of the order.

Amy W

The goods quickly arrived. The description corresponds. So far i'm happy. For travel the most it. It remains to test time

Nicole B

There are Tons of pockets and storage available inside the bag. And its built in several layers, which is where the added security feature which is built in. Ascetically the bag looks pleasing to the eye, and It has multiple uses not just as a storage bag for school or office, but you can use it for camping or hiking. Even as a decent carry one if you are traveling on a plane.

Zane T

There is also a shockproof function on the back of the bag.the main compartment of the bag is big enough to hold everything including his laptop. And the shoulder is very nice and cushioned. Great book bag

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