Dogs My Love Leather Dog Black Harness Spiked Large 25.5"-34" Chest, 28 spikes Amstaff, Bull Terrier Features nickel-plated hardware and heavy duty D-ring Chest girth: 25.5"-34" Chest piece has 28 spikes Strong and durable. All 5 straps are adjustable. Allows the dog to have relaxed movement of muscles, makes it flexible and efficient.