Purchased May 2025. I received another color as a gift, so I didn't need to use this one, which remains unopened. I'm offering it to someone who will use it. The pink fabric part (umbrella-like material) is approximately 7.5cm, and the circumference has a wire in it. Size M. (Measurements are approximate.) I have never opened it from the bag, but please refrain from purchasing if you are looking for a perfect item. ✫ Disinfected with alcohol before shipping. ✫ Takkyubin Compact anonymous delivery. ✫ Immediate purchase OK. Thank you! #CatGoods #ElizabethanCollar #CatSupplies #PetSupplies