The Karl Travel Backpack is a great companion for a long weekend away and a good alternative to a trolley. It is hand luggage approved by all airlines and can fit up to 44 litres.
It has a classic, timeless look but is full of practical features. By opening it from the back, it gives easy access to your laptop and lets you pack it like a suitcase.
The fabric of the Karl Travel Backpack is waterproof. Just make sure you close the zippers properly, then biking through the Dutch rain is no problem :)
NOTE: Karl is a VERY BIG backpack. For daily use, we recommend a size smaller. (i.e. Alex 24h Backpack)
SUPPORTIVE HIP BELT (OPTIONAL)
Depending on how much you pack and how long you are planning to walk with the backpack it might be a good idea to add a supportive hip belt to take some weight off your shoulders.
Check out the hip belt