HALO Twin Rail Courier Berlin tyre, £22.99, www.ison-distribution.com

Here's a beefed-up Berlin version with even greater puncture defence. The regular 1mm anti-flat strip is replaced with a whopping 2.5mm one (you’ll need a mallet this time). Amazingly, it still only weighs 415g and rolls better than some training tyres we’ve ridden lately.

Halo rates a Berlin up front and Berlin HC out back as its ultimate combination — we've been riding this combo for a couple of months without a single flat. However one of our courier mates has gone through a basic pair in similar time (too much skidding!).

PROS flat resistant, ideal for fixies 
CONS not for everyone