(CNN) More than 200 footwear companies sent a letter to President Donald Trump on Wednesday asking him to cancel new tariffs on Chinese imports -- including shoes -- that are set to take effect Sunday.

Manufacturers including Adidas, Converse, Crocs and Nike joined retailers like Foot Locker and JC Penney in signing the letter , which was also sent to Treasury Secretary Steven Mnuchin and other top administration officials involved in China trade talks. The letter was also signed by small and independent shoe stores.

"There is no doubt that tariffs act as hidden taxes paid by American individuals and families," the letter read.

Trump last week promised to ratchet up planned tariffs on $300 billion in Chinese consumer goods imports, including shoes, from 10% to 15%. Those tariffs are set to begin taking effect September 1, though most goods will be duty-free until December 15 -- a move Trump made to avoid putting a damper on holiday retail sales

That's on top of tariffs he put in place last year on about $250 billion in imports, chiefly industrial components. Trump said the US will raise tariffs from 25% to 30% on those goods starting October 1.

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