A shoe manufacturer has said it will recall one of its boots after customers complained that the sole was decorated with swastikas.

The issue emerged after a customer told of his shock after receiving his new boots and shared an image of the underside of his boot - which appeared to feature swastikas - online.

Makers of the Polar Fox boot, which is still on sale on Amazon for $38.99, claim they were unaware of the controversial marking until spotting a post about the symbol, adopted by the Nazis, on Reddit.

Offense: California-based shoe company Conal International Trading Inc said it will recall its Polar Fox boot, pictured, after customers spotted 'swastikas' on the sole

Revelation: Makers of the Polar Fox boot, pictured, claim they were unaware of the controversial marking until spotting a complaint online

'There was an angle I didn't get to see when ordering my new work boots,' wrote user 'FRSHFSHFCKR' alongside the image which has been viewed on Imgur over two million times.

Conal International Trading Inc, the California-based company that sells the boot, said the symbols were unintentional, claiming it was a 'design flaw'.

E-commerce manager Anthony Nguyen told Daily Mail Online that they only became aware of the issue after seeing the Reddit post. He said they plan to recall the boots.

He said: 'That was totally something that wasn't intentional or anything like that. It's something that we're going to pull off the shelves obviously...It was obviously a design flaw.'

Shocked: A Reddit user shared an image of the underside of their boot, pictured on Amazon, and its footprint that has been viewed over two million times

Unintended: Conal International Trading Inc said the marking was a 'design flaw'

Anthony said they will be speaking to their designers about how the error occurred.

He did not rule out that it may have been intended to portray the swastika according to its ancient meaning as a religious symbol for well-being used in Hinduism, Jainism and Buddhism.

'Obviously that's something we have ask the designers. That symbol existed before the swastika in Buddhism,' he said.

Other customers have also shared their dissatisfaction online.

'Love these boots they are very comfortable after breaking in, would be five stars but there are swastikas on the bottom of the boots which I'm not a fan of,' Gloria Johnson wrote on Amazon.

'Not a fan': Numerous customers have also posted complaints on Amazon, pictured

Unimpressed: This customer, pictured, was shocked to find swastikas on the sole of their new purchase

Another customer said: 'The shoes seem quality, but the bottom of the shoe has about five tiny swastikas on it.'

'It may seem backward when looking at it, but the print that it leaves behind is definitely a swastika with the correct orientation. I have a hard time believing that this wasn't intentional,' wrote 'Snoozie' in response.

John Bikowitz disagreed, saying: 'It resembles more so the Buddhist swastika because of the direction. It is the wrong direction for the Nazi swastika. So, it is not as bad as you think.'