MICHAEL KORS ERIN SMALL MINI CONVERTIBLE BACKPACK $348 | eBay。I have a authentic Michael Kors Erin Small Studded Backpack for sale. Backpack is in excellent condition and has no flaws or issues as it was used once. Backpack is a beautiful canary yellow, and has a grayish liner inside. Backpack has studs on the outside as well, which gives it extra style. Backpack measurements are in the photos. All sales are final, as I do not accept returns of any kind. Most of my items listed are slightly used items, so please understand they will not necessarily be perfect. I ask that you read the descriptions fully. I try to describe all of my items as descriptive as possible. All of my items also come from a smoke free home, and are properly stored. If you have any questions, please feel free to ask.