The Nunn Finer English Equestrian Round Raised Running Martingale Attachment is made of beautiful Italian leather that matches all Nunn Finer raised and fancy stitched breastplates and martingales. Stainless Steel Buckles. Features: Hardware: Stainless Steel Color: Havana Sizes: Cob - 17" to 19.5", Horse - 22" to 26", Oversize - 24" to 28"