Already after the first use of 3 to 4 metal eyelets have leached. During the test at the fourth eyelet showed how loose the eyelets "riveted" are - just easier train is enough to loosen the eyelets on the plastic. Poor! The polyester material without metal eyelets also is then very unstable, so that he would tear when using a cord in pretty soon.
I have the envelope returned directly back. Fortunately, running the shipping and thus the reversal on Amazon, so there are no problems here.