Michael Kors Stretch Cotton Trench Mac. Double Breast Fastening. Tie Waist. 97% Cotton 3% Spandex. Michael Kors Branded Details. Explore the luxurious world of Michael Kors with this amazing stretch cotton Trench Mac. This jacket features a full button fastened double breast front which has been detailed with branded Michael Kors buttons and a large hook and eye fastening on the pointed collar. Each cuff has a band detail as well as hoop style epaulettes on each shoulder. This jacket features a tie waist that has been detailed with hard wear eyelets and a branded buckle. This piece has been finished off with a slight stretch fit as well as above the knee drop.