Please read the profile before asking questions about purchases. We will refrain from responding to inquiries about items already described. When using the bundling feature, please apply without changing the price. We will send you a message after applying the combined shipping discount, so please proceed with the purchase then. The chain and PP tape for the core are made in Japan, and the plastic parts (adjusters) are YKK. This is a half-check collar for medium to large dogs. The chain is plated, so it's okay if it gets wet. (Please do not leave it wet for several days) Width: 2.5cm Collar size: Approximately 29-44cm (chain and hardware length not included) Chain size: Length 22cm, weight 60g, inner diameter of the split ring 21mm Before use, always check for any damage. If there is any damage, do not use it and replace it with a new collar. As this is a handmade item, 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 by regular mail, so there is no guarantee, and it will be delivered to your mailbox. For small items, we may affix stamps and drop them in the mailbox instead of taking them to the post office. In the case of shipping from the mailbox, we will send a "shipping completion email" when the item is dropped in the post office mailbox, regardless of whether there is a collection on weekends and holidays.