ASH Mustang Amphibian is a lace-up ankle boot that pairs a rugged lug sole with a striped fabric back detail for a casual, edgy look. Identified model name: Mustang Amphibian; related Lace-up Boots (Gotta) designer model number found during verification: F23GOTTA. Key attributes: Black | Pig leather | Rubber lug sole for traction | Lace-up closure | Ankle-height silhouette | Striped fabric back ankle detail | Chunky lug sole | Composition & care: 70% pig leather | 30% fabric