【Product Structure】 This product uses 304 stainless steel, making it healthy and hygienic. It has good sealing properties, so it won't leak even if you put it in your bag sideways when the lid is closed tightly. Although it doesn't have a handle, it has a more delicate feel than a regular coffee cup, making it very non-slip. 【Aperture】 Wide-mouth type, wide enough to put in ice. 【Cold and Heat Retention】 The double-layer stainless steel structure blocks heat from the outside, allowing you to keep your hot beverages at the perfect drinking temperature. The vacuum structure prevents condensation, allowing you to enjoy cold drinks for longer. (The cold and heat retention time may vary depending on the ambient temperature and the temperature of the liquid. High summer temperatures and low winter temperatures will greatly affect the cold and heat retention time.) 【Wide Range of Uses】 The cup can be used when working at the office, going to school, or traveling. Furthermore, the cup can not only be used by yourself, but also given as a great present to someone else. The lid opens and closes smoothly, and it's easy to clean! Enjoy hot or iced drinks like coffee and tea easily at the office, at home, at school, or at a pub. Note: When putting it in a bag, please place the body upright. I have kept it unopened after purchase. It has been taken out of the box for photography. Retail Price: ¥3,680