Please read the profile before asking questions after purchase. We refrain from responding to inquiries about items already described. The pattern is printed on polyester grosgrain ribbon, so it's waterproof. (Please avoid leaving it wet for a long time.) Width: 2.5 cm Collar size: Approximately 30-44 cm Before use, always check for any damage. If there is any damage, do not use it and replace it with a new collar. This is a handmade item, so the stitching may not be perfect, and there may be slight misalignments. Please purchase only if you understand this. In the event of an accident or trouble during use, we are not responsible for any guarantees or liabilities. Shipping will be via non-standard mail, so there is no guarantee and it will be delivered to your mailbox. If shipping from a post box, we will send a "shipping completion email" when the item is dropped off in the post office box, regardless of whether there is a collection on weekends and holidays.