Fashion and Travel Accessories Design Oyster Backpack Backpack by Anne-Christin Schmitt The Oyster Backpack stands out for it’s clean silhouette and refined design, which makes it a real, timeless Gretchen bag. The Backpack is a perfect companion for a city trip. It is as elegant as it is practical. The spacious interior, with the key ring and the internal zipped pocket as well as the zipped pocket at the back of the Oyster backpack makes it smart enough for work and chic enough for cocktail hour. Swing it by the brushed metal handle or use the twin delicate but robust straps of the backpack.