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 submit your application without changing the price. We will send you a message after applying the combined shipping discount, so please proceed with the purchase then. The core PP tape and D-rings are made in Japan, and the plastic parts (buckles & adjusters) are YKK brand. We use a thick, 100% cotton canvas fabric. The white parts are not pure white, but rather an off-white color. Width: 2.5 cm Collar size: Approximately 33-49 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" when the item is dropped off in the post office mailbox, regardless of whether there is a collection on weekends and holidays.