These tornado backpacks are 100% waterproof when closed. Made in Portugal for French brand Casyx, They are minimalist but full of useful details. They have a 20 litre capacity with a built in laptop pocket that will hold anything up to a 17". With adjustable capacity, it has a zip top as well as a flap secured with velcro to give you extra capacity when you need it. Its padded back and shoulder straps make it really comfortable to wear. There's an external pocket for things you need on the go and a clip on the inside to keep your keys safe. Overall it's the ideal commuting back back that's a pleasure to wear.

What size is it?
33.5 cm (width) x 41 cm (height, flap folded) x 13 cm (thickness). Holds a 17" laptop and has a capacity of 20 litres.