Fashion and Travel Accessories Design Wit Bag by Teresa Chan Wit is a convertible bag designed for everyday use. Wit can be carried in five ways: as a handbag, a shoulder bag, a crossbody bag, a backpack and a top-handle bag. The fluid and supple structure folds and unfolds into four silhouettes: folded, structured, slouchy and expanded. Two adjustable and detachable straps support each carrying mode. Two modular add-ons, an everyday bag insert and a laptop sleeve, can be used inside the bag or alone. The bag is made of cactus leather, a lightweight, durable and water-resistant plant-based leather alternative.