Michael Kors Ladies Messenger. SKU: 30S3GIMM8L-001. Color: Black. Size: 10.25”W X 6”H X 1.75”D. Michael Kors Medium Mila Messenger Bag. Made from leather, this messenger bag features gold-tone hardware, a snap fastening, and an adjustable strap ranging from 13” to 21.5”. Designed for practicality, it includes a back slip pocket on the exterior, while the interior offers a back slip pocket, a back zip pocket, and two front slip pockets. The lining is made of 100% polyester. 100% leather.