Please read the profile before asking questions or making a purchase. We will refrain from responding to inquiries about information already stated. When using the bundle feature, please apply without changing the price. We will send you a message with the discounted price for combined shipping, so please proceed with the purchase after that. The core PP tape and D-rings are made in Japan, and the plastic parts (buckles & adjusters) are YKK. Width: 2.5 cm Collar size: Approximately 30-43 cm Before use, always check for any damage. If there is any damage, please do not use it and replace it with a new collar. These are handmade items, so the stitching may not be perfect, and there may be slight misalignments. Please purchase only if you understand this. Please note that we are not responsible for any accidents or troubles that may occur during use. Shipping will be via regular mail, so there is no guarantee, and it will be delivered to your mailbox. When shipping from a mailbox, we will send a "shipping completion email" at the time of posting to the post office mailbox, regardless of whether there is a collection on weekends and holidays.