Puppia Authentic Frontier Superior Harness, Medium, Black Size: Medium-Neck-11" to 14.2", Chest-15" to 21.3" Pattern and Solid Schemed Patented Design-US Patent No. 8,166,924 Adjustable Neck with Hook and Loop Fasterner, Adjustable Chest Belt Available in Small to Large Adjustable Neck with Hook and Loop Fastener; Adjustable Chest Belt