Purchased at a dog event. Used only on the day of purchase. Small dog Size reference: Used on a 3 kg Yorkshire Terrier. Neck circumference 22 cm. Denim fabric, fleece lining. Cold protection. Adjustable with a chin strap. There's a string at the back to attach to the collar, preventing it from falling off. ★It's fabric, so I think it's okay, but I will pack it in a box. Please refrain from purchasing if you are concerned about minor details. I cannot lower the price any further as it would be a loss.