- Sunny is a part of Silfen Exclusive, and is made of high-quality calf leather just like the rest of the collection. So if you care for your leather bag, it’ll be with you forever. Sunny is the perfect bag for life on the go! This cool leather bag can be worn cross-body or alternatively as a bumbag and the single strap is easy to adjust. Sunny has one large compartment that can hold all essentials; phone, wallet and keys, and one smaller pockets that is perfect for small, miscellanous items.