Balenciaga New product release: Balenciaga bag charm keychain. Balenciaga keychain, the latest model of bag charm with a higher level of sophistication, features a design inspired by celebrity styles. This keychain series is a collaboration with classic design concepts.Details include a vintage finish that sets it apart from the glossy versions available on the market. This model has been consistently popular and is a best-seller within Balenciaga, making it a great match for trendy backpacks.