Be prepared for UK import duty to be payable on top.

The bag's OK for a laptop. It's big enough for a 17" but not expandable to take much else. The strap's OK for short carries but not particularly comfortable for any longer hikes. I wanted it for a camera and lenses - for that it's totally unsuitable it's just not wide enough. I had to pay 13 UK import duty on top to take delivery so beware.