The middle size, and the one most people end up buying twice. Fits an A5 notebook, a handful of pens, a charger and a cable, or everything you need to take out of a bag and into another bag.

Mesh means you can see what is in there without emptying the whole thing out, which is the entire point.

• 18 x 24 cm
• Nylon mesh, zip closure
• Two colours: Green and Indigo

Also comes in Small and Large if you want the set.