◎ Available for immediate purchase ◎ Unopened, unused item. There is sticker residue on the outer packaging (see photo 1). Excerpt from the website: ↓ 【Size】(approx.) 210mm 【Material】Body: 18-8 stainless steel 【Caution】・18-8 stainless steel is a rust-resistant material, but leaving salty or acidic substances (such as salt or vinegar) inside can cause rust. ・For daily cleaning, wash with a sponge and detergent. (Avoid using steel wool or polishing powder as they will scratch the surface.) ・Do not fill with water or other liquids to the brim.