Please read the profile before asking any questions regarding purchase. We will refrain from responding to inquiries about items already mentioned. 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 from YKK. 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 33-48 cm Before use, always check for any damage. If there is any damage, please refrain from using it and replace it with a new collar. As these are handmade items, the stitching may not be perfect, and there may be slight misalignments. We appreciate your understanding and ask that you only purchase if you agree. 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 post box, we will send you a "shipping completion email" at the time of posting to the post box, regardless of whether there is a collection on weekends and holidays.