Île de Ré key ring - Donkey in vichy panties

Île de Ré keyring - Donkey in trousers  The ultimate souvenir, this keyring is a must-have for your keys and everyday use. It also makes the perfect gift for loved ones. The hardest part is choosing! This keyring features a donkey in red (front) and blue (back) gingham trousers, the emblem of Île de Ré. Why are they donkeys on Île de Ré ?