Pony hair Boston Mules with regular fitThe pony hair Boston Mules with regular fit by Birkenstock 1774 combine comfort with bold style. The anatomical cork and latex footbed naturally supports the foot, while the horsehair upper with finish gives a gritty, sophisticated look. The suede footbed offers softness, complemented by an EVA and rubber outsole that provides lightness and stability. The adjustable metal buckle adds a functional detail to this boldly spirited design.