Please read the profile before asking questions about purchases. We will refrain from responding to inquiries about items already described. ★Material costs continue to rise. The price of chains has increased significantly again. We will be adjusting prices accordingly, so please understand. (T_T) 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 large dogs. The chain is plated, so it's okay if it gets wet. (Please do not leave it wet for several days) Width: 2.5 cm Collar size: Approximately 34-54 cm (chain and hardware length not included) Chain size: Length 22 cm, weight 60g, inner diameter of the ring 21mm Before use, please be sure to check for any damage. If there is any damage, please 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. 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. 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 off in the post office mailbox, regardless of whether there is a collection on weekends and holidays.