Made with nylon paracord 550 (heart part is paracord 175). Colors and length are customizable. This is the price for a half-check collar up to 35cm in size. An adjustable belt is available for an additional 800 yen. (The belt is made of soft BioThane, and the color can be chosen to match the cord from the available stock.) Sizes exceeding 35cm will be an additional 500 yen per 10cm. Discounts are available for purchases of 2 or more items, or when purchased as a set with a leash. Please comment. Thank you for viewing.