Carhartt Adjustable Nylon Duck Dog Collar Medium 12"-18" Marine Blue Repells H²O. The Carhartt Adjustable Nylon Duck Dog Collar is a rugged and well-constructed dog collar. It's fully adjustable with metal hardware and features Rain Defender technology to prevent the collar from soaking your pet around the neck. The Carhartt wordmark is reflective for low-light visibility. Durable dog collar made with nylon webbing with duck canvas weave. Fully adjustable for a great fit. Reflective Carhartt wordmark for low-light visibility. Durable side release buckle. Half metal/half durable plastic. Rugged slotted metal D-ring with tag holding capability. Condition is Brand New, With Tags. Shipped USPS Ground Advantage Package.