Replacement straw tops for b.box 350ml and 500ml bottles, made of durable plastic. Retail price: 1980 yen Currently out of stock on the official website. Purchased on Rakuten. This is a replacement straw part for b.box stainless steel drink bottles. They were sold as a set of 2, but since only one was used, I am offering the other one. Please understand that I will pack it to fit within 3cm thickness. I took it out of the bag for the photo. Although it is an unused item, it has been stored at home, so please refrain from purchasing if you are sensitive about such things. The bottle body and straw part are not included. Not compatible with spout-type bottle bodies. Compatible with b.box stainless steel drink bottles (straw type) and drink bottle junior. - Brand: b.box - Product Name: insulated drink bottle replacement straw tops - Compatible Products: 350ml/500ml insulated drink bottle - Material: Silicone Thank you for looking.