I would appreciate it if you read my profile. ❁*·⑅❁*·⑅❁*·⑅❁*·⑅❁*·⑅ ❁*·⑅❁*·⑅❁*·⑅❁ ⚫︎Neck size → Adjustable from 12cm to 23cm ⚫︎String width → Approximately 6mm ⚫︎Bell → 10mm / Chirimen (crepe fabric) ※ Approximate sizes. ❁*·⑅❁*·⑅❁*·⑅❁*·⑅❁*·⑅ ❁*·⑅❁*·⑅❁*·⑅❁ Handmade product. Made with cotton amunzen fabric. The yarn core makes it soft and lightweight. I think it will reduce stress. ✔️ Slide the knots on both sides to widen it. Put it over the face, then Adjust it to the appropriate size. You can wear it without untying the knots. ✔️ Consider the size of the face and If the collar gets caught, Choose the size that allows it to loosen and come off for safety. ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ ❁ If you are unsure about choosing a size ❁ Measure the nude size while your pet is sitting. 【= Snug fit without extra space】 The appropriate size is that size plus approximately 3-5cm. The guideline is that 2-3 fingers of a human can fit in the gap. For kittens, approximately 2-3cm. It's best if 1-2 fingers can fit in. This is just a guideline, so Please use it as a reference. ❁ To keep it clean ❁ Wipe it gently with a pet shampoo towel, etc., to keep it clean. ❁ The photo shows the smallest size ʕ•ᴥ•ʔ