Purchased in 2023 and used a few times. There are no noticeable scratches or stains, but some color unevenness can be seen. =Quoted from the official page below= This "stainless steel bottle" is perfect not only for outdoor activities such as camping, mountain climbing, and travel, but also as a "my bottle" for daily use such as commuting to work or school. Due to its double-walled insulation structure, it excels in heat retention and cold insulation, and can maintain the optimal temperature for a long time. Even if you put hot water in it, the heat is less likely to be transferred to the outside, so there is no risk of burns. Even when you put cold drinks in it, it is less likely to condense, so it won't wet your hands, bag, or important documents on your desk. The wide drinking spout allows the aroma of hot coffee and herbal tea to rise easily, making your break time even more enjoyable. It is convenient not only for drinking directly, but also for when you want to pour it into a cup. Also, because there are few small parts, it is easy to wash thoroughly, making it hygienic to use. Size: Top 55mm x Bottom 78mm x Height 258mm Mouth diameter: Approximately 4.7cm Body weight: 400g Capacity: 750ml Materials: Stainless steel, bamboo, silicone Heat retention: 68°C or higher (6 hours) Cold insulation: 7°C or lower (6 hours) * Both heat retention and cold insulation are measured in accordance with JIS standards. *Please purchase only if you understand the above. *No claims and no returns are accepted.