UGG Classic Ultra Mini Booties combine a durable leather exterior with a wool-lined interior for comfortable, casual winter wear. Designed as low-ankle boots, they deliver everyday warmth and a flat, grippy rubber sole for reliable traction. Key attributes: Brown | Leather | Closed design | Flat sole | Rubber sole | Casual style | Ankle boot silhouette | Wool-lined interior | Composition & care: Outer: Leather 100% | Inner: Wool 80%, Synthetic Fabric 20% | Sole: Rubber 100%.UGGs feel snug at first, but the lining expands with wear. We recommend your usual size.