Balenciaga New Product Release: Balenciaga Bag Charm Keychain. Balenciaga Keychain, the latest style bag charm with a higher grade, features a design inspired by celebrity favorites. This classic co-branded design keychain series has a vintage finish with detail-oriented craftsmanship, unlike the glossy versions available on the market. This item has been consistently popular and is a best-seller within Balenciaga, making it a perfect match for trendy backpacks.