This is a dog collar. It's about 30cm long. The width is 1cm. Please consider this, as these measurements are approximate. It doesn't appear to have been used, but it has been stored in its box for a long time, so it's available at a reduced price. Please understand this before purchasing. 100 yen off if you buy it with a leash. You can get a further discount if you buy other items together. Please comment if interested.