All our items are guaranteed authentic or money back. Every item is hand curated in house and goes through an intensive authentication process. If we find an item questionable, we immediately consult a network of trusted authenticators across the globe. As a token of Appreciation to our Hermes buyers we offer a free Bababebi Authentication upon request. Bababebi is a world-renowned Hermes Authenticator. For any and all other brands we use Entrupy.