CNBC: Plagued by counterfeits and unauthorized selling on the online shopping site, the sandals company will no longer supply products to Amazon in the U.S. starting Jan. 1. by Ari Levy
'Additionally, Birkenstock won't authorize third-party merchants to sell on the site, according to a letter the company sent to several thousand retail partners on July 5.
'The memo, from Birkenstock USA CEO David Kahan, was obtained confidentially by CNBC.com.
'"The Amazon marketplace, which operates as an 'open market,' creates an environment where we experience unacceptable business practices which we believe jeopardize our brand," Kahan wrote from the company's U.S. headquarters in Novato, California. "Policing this activity internally and in partnership with Amazon.com has proven impossible."'