Conal International Trading Inc. Pulled the Polar Fox boots this week and issued an apology after a Reddit user on Monday posted an image of the imprint that went viral.
"We would like to issue our sincerest apologies to our customers and to anyone who was offended by the swastika imprint that the boots left behind," the company said in a statement.
"The design was not intentional and was a mistake made by our manufacturers in China."
The man behind the picture posted on Reddit wrote in a caption: "There was an angle I didn't get to see when ordering my new work boots."
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His photo, viewed more than three million times, prompted a flurry of snarky comments.
"Very comfortable. Nein out of ten," one person wrote.
"I love them too, they really put me in mein kampfort zone," another wrote, while a third said "Heily recommended."
Another person quipped: "Good for marching into Poland."
The military combat boots were sold on Amazon, which removed the listing on Thursday.
In the ancient Sanskrit language, the swastiska means "wellbeing" and was used as a symbol of good fortune before it was adopted by the Nazis.
"The League reiterated to the company that the swastika serves as the most significant symbol of white supremacy and anti-Semitism, and whether intentional or not, the use of the symbol on the boot is deeply offensive," the statement said.