7'-10.5' neck x 5/8' width.Simple and practical heavy duty nylon safety basic dog collar. The reinforced stitching is strong and durable. All sewing joints are folded over making them smooth. This allows more comfort to you and your four leg friends during use. Heavy duty metal O ring utilizes three plating processes and a dying process. Suitable for boy and girl dogs and made for training and daily use walking running jogging sporting dog collar. Our quality is guaranteed. If you are not 100% satisfied with the product we will provide customer service, refund, or new product.