It’s a measure of just how in tune we are, that we immediately thought a Glowbag was something you planted tomatoes in (don’t bother – home-made compost is just as effective), but it turns out to be a bag that, er, glows.

As walkers, cyclists, equestrians and motorcyclists will knowl, it pays to be seen, and reflective clothing does quite a good job.The trouble with day-glo jackets is that they make you look like a banana. No problem if you’re a fruit fetishist, or the sort of brave soul who really couldn’t care less, but some people object to dressing up like a Belisha beacon to avoid being turned into strawberry jam by an incompetent motorist.

The answer is to dress in fashionable black, but wear something highly fluorescent, such as a Glowbag, which comes (naturally) in fashionable black, with stripes, a triangle, or large rectangle of Scotchlite material.This is the stuff the professionals use, and it throws back light from car headlights to spectacular effect. As the fashionable young people at Glowbag like to say: ‘This is no fluorescent yellow strip! This isn’t about looking like a complete nerd!’ Ah, quite so.

Glowbags come in two types – ‘Grand’ (a 25 litre courier bag), and ‘Midi’.This is much smaller, indeed the two zip-top pouches on the Midi will barely accommodate ‘two cans of Carlsberg’, according to Glowbag, which could mean multiple trips to the off-licence. For unashamedly nerdy but practical types, a couple of tinnies might translate into an Ordnance Survey 1:50,000 map, A to B magazine, wallet, house keys, puncture repair kit and a few basic tools.There’s also a handy little pouch on the strap, that makes a jolly useful home for your mobile phone, provided you’re fashionable enough to own one, and of course, know how to use it.

Our only real criticism is that you have to make a conscious effort to sling the bag behind for it to be effective.They’re also fairly expensive: the small Midi bag costing £21 to £26.50 and the Grand, £52 to £59.The price depends on the amount of Scotchlite in the design, which gives you an idea how expensive the raw material is. Still, street credibility never came cheap.

Glowbag Ltd tel 0207 5822282 mail sales@glowbag.com