Looks like scammy business model for at least several months. Received two pairs and no free pair.Then tried to cancel and the website didnt let me access. Customer service is WORST, mostly bots and every contact different person with same excuse “I sent you email to reset password” which is not working. They are aware of that since december when was my first contact. Still no solution and same responses. Luckily I canceled my paypal payment but now they threat me with vindication emails.Stay away, beware of that scammy business.