What actually fits in 28 litres? Packing a working day into the American Tourister Valex

Backpack listings love numbers, and "28L" sounds big without telling you much. So let us picture a normal working day and see what goes in.

The American Tourister Valex is described as a 28 litre backpack with two compartments, a sleeve for a 17 inch laptop, aimed at college and office, in black, with a one year global warranty.

A working day, packed

1. The laptop. A 17 inch sleeve is larger than most people need, so a common 15 inch laptop fits with room to spare.
2. A tiffin. A two- or three-tier lunch box fits comfortably.
3. A water bottle in the side pocket, if the bottle is slim.
4. A light jacket or a folded umbrella for the monsoon.
5. Chargers, a notebook and a pen.

That is roughly what 28 litres is for: a full day without a second bag.

The things to think about

Two compartments is simple

One main space and one laptop section keeps things straightforward. If you like a separate pocket for every cable, it may feel basic.

Big bags are heavy bags

A roomy backpack weighs something even when empty. Look for the listed weight before you buy, especially for long walks or crowded trains.

Black shows dust

Black hides stains but shows dust and lint. A quick brush now and then keeps it looking tidy.

Before you order

• Check your laptop's actual dimensions, not just the screen size, against the sleeve.
• Read reviews for zips and shoulder straps. Those are the parts that wear out first on any daily backpack.
• Know how the warranty works for a bag you carry every day.

A dependable, roomy bag for commutes and campus. It will not win style points, but it will carry the whole day.