The fastest way to waste money on a work bag is trusting the "fits up to 15-inch" label. That number usually means the laptop barely squeezes in with no padding and the bag bulges. Here is how to choose one that fits and protects.
The Real Math
A 13-inch laptop is about 30 cm wide; a 15-inch is about 36 cm. You need an interior compartment at least 2–3 cm longer than the laptop and deep enough that the top edge sits below the bag's zip line. The goyard-style zipper tote clears a 15-inch with room to spare and still looks like a handbag, not a computer sleeve.
Padding Matters More Than Size
A bag that fits but has no padding scratches the laptop on every curb. Look for a suspended sleeve or build your own with a slim neoprene slip inside. The tote collection works best here because totes are wide and take an insert without losing shape.
Carry-Comfort Check
Pro tip: a laptop adds 1.5–2 kg. Test the straps — a thin single strap digs; a wider or reinforced strap (or a crossbody option) saves your shoulder on a real commute.
Pick from the work totes with a measured interior, add a sleeve, and your laptop rides protected and your outfit stays sharp.