Just make sure you don't post it.

Without sounding too paranoid, thieves are everywhere. On the streets, on the bus, and sometimes hiding in the rubbish like Oscar The Grouch. We think. Anyway, it's never a bad idea to be security-conscious, most of all when it comes to something precious like your laptop.

The Undercover Laptop Sleeve is a neat, light-hearted solution that makes your laptop look no more conspicuous than a big, battered letter - and nobody wants to steal one of those unless they're a couple of stamps short of the full postage, if you see what we mean.

Speaking of which, you'd be advised not to leave it hanging around any courier pick-up points or outboxes, or else you might find yourself running after a delivery van like a mad person.

The attention to detail in this defensive device is great - the phoney address, the battered appearance, the crafty "LOL Post" emblem it borders on being cheeky. The size is adjustable, so even if you've got a lumbering great colossus of a laptop (what do you mean 17 minutes is too long a start-up time?!) then you'll be able to squeeze it in. Similarly, your tiny little netbook will sit snugly inside thanks to the Velcro adjusters, making sure that your 'package' stays super-safe.

The padded interior will protect your precious cargo from bumps and knocks (though you might want to think twice before using it as a sled and rocketing down the staircase), not that people tend to pay much attention to folk with battered-looking parcels. So no matter the size and heftiness of your laptop, you can blend into the crowd and rest safe in the knowledge that no-one knows what you're carrying. Unless, like us, you're sort-of tempted to carry the parcel while wearing a black trench coat and sunglasses and ask random people for passwords in a Russian accent.