This is a blue rope tension collar (dog leash) from Animal Club. It has an elastic stretch that extends up to 30cm when pulled. This reduces the strain on the neck caused by pulling. It is used by hooking it to the collar with a clasp called a "nasukan" (snap hook). The price is normally $9.99 USD. Thank you for viewing. Because it will be bulky when bundled, we will ship it with the ties removed. Thank you for your understanding.