Thank you for your patience. Due to good timing, it was completed sooner than expected. The chin strap in the image is a sample, so please choose your favorite color. Please leave the color of the silicone stopper to me. As a small gift, I'll include a ribbon charm, so please feel free to use it. I think it would look nice if you attach it to a harness or clothes to match. Pleated type, middle button LL size (approximate: 9 kg or more) A: From forehead to behind the ears 8-13 cm B: ~54 cm (tie and cut at your preferred length) C: 4.8 cm D: 24-34 cm E: 8.4 cm Hand wash & ironable (some parts require low heat) Please check at your convenience. Thank you. ※ When hand-washing after completion, there was a part that looked black unlike the others. I don't know what could have caused this, so I hope you understand that it's due to the fabric's specifications. There is no problem when dry. --- 【Reference: Standard LL Size】 A: From forehead to behind the ears 8.5-14 cm B: Up to ~54 cm C: About 5 cm (set slightly narrower than the space between the ears) D: 23.5-33.3 cm E: Undecided --- ⚠ Please read before purchasing ・Strong creases in the brim may be difficult to remove. Please be careful when washing and storing. ・Please refrain from purchasing if you are looking for a perfect product, as this is a handmade item by an amateur. ・Measurements are approximate. ・The back is a type that is fixed at the base of the ears. ・This product does not completely block UV rays. ・Please use safety pins with consideration for your pet's safety. ・The chin strap will be shipped separately from the hat. ※ We are not responsible for any accidents that may occur while using this product or its accessories. Please use it within the owner's sight and while ensuring safety. ※ Please refrain from imitating the size adjustment mechanism. ※ The creator and seller of this product have deepened their understanding of intellectual property rights by consulting and receiving guidance from experts such as patent attorneys.