The cheap crampons can bend when used. Photo: BMC

Mountain experts have warned of the dangers of buying substandard crampons.

The British Mountaineering Council said cheap crampons on sale ‘on the most well known online trading site’ have bent and folded in on themselves, putting users at risk.

Dan Middleton posted the warning on the BMC’s website. He said: “They look superficially similar to a product from a well known and very reputable European manufacturer, but these are not by any stretch comparable to a real pair of crampons.

“Crampons sold within the EU must conform to EN 893, which sets a minimum standard for the strength of the points, the frame and any attachment points or bales. Such a crampon will be CE marked and have both the name of the manufacturer and the year of manufacture marked on it.

“In addition there will be attached to the new crampons a set of instructions telling you what you need to know about fitting, inspecting and maintaining them.

“The imitation crampons being sold online don’t conform to these standards and are a hazard to anybody who ends up relying on them for their security whilst out on the hill. If you have bought a pair, contact your local trading standards office.”

Mr Middleton said, though it’s possible to buy proper crampons online, he recommends taking boots with you to a reputable retailer to make sure they fit your winter footwear.

There is also advice in a video on the BMC website on buying crampons.