Size. A compact backpack holds a tablet, a wallet and a water bottle. A larger one takes a small laptop and a notebook. Check what you actually carry daily.

 

Straps. Wider straps spread weight better over a long day. Make sure they adjust far enough to wear over a winter coat.

 

Opening. A zip top is quick and secure. A flap with a clasp looks smarter but takes a moment longer to open.

 

Back panel. A flat, firm back panel stops a full bag digging into your back.

 

Care. Empty it weekly. Leaving a heavy bag packed stretches the straps and seams over time.