Bell included, with D-ring. Measure the smallest part of your cat's neck, fitting the measuring tape snugly against the neck, parting the fur if necessary. Then, add: Kittens/short-haired cats: 1-2 finger widths (+2-4cm) Long-haired cats: 2-3 finger widths (+5cm) *About bundle discounts* 50 yen off for each item after the first. No discounts for single items. *Notes* Each item is carefully handmade, so there may be slight variations in stitching and balance. While designed to come off with force, we are not responsible for any accidents caused by the product. Returns and refunds are not accepted except for defects on our part. To keep prices low, we ship via regular mail. We cannot track the package, and we are not responsible for loss, damage, or soiling. Please understand this before purchasing. ⭐︎For insured, anonymous shipping: Add 50 yen for Yu-Packet Post Mini Add 100 yen for Rakuraku Mercari Bin or Yu-Yu Mercari Bin. Please feel free to ask if you have any questions. #Ram Collar