The three s written: 1. Made of high-quality stainless steel, durable and safe. This thermos cup is made of high-quality 316 stainless steel, featuring excellent corrosion resistance and heat preservation performance, ensuring the safety of drinking water. The hammer-patterned design is sturdy and beautiful, highlighting one's taste. 2. Unique gradient design and bullet-shaped design, fashionable and portable. The cup adopts a gradient color design and has a fashionable and elegant appearance. The bullet-shaped design is unique, and vacuum technology ensures a long-lasting heat preservation effect. The handle design is convenient to carry and suitable for outdoor travel and sports occasions. 3. Essential for outdoor travel and sports, with strong multi-functionality and practicality. This thermos cup is suitable for outdoor travel, hiking, mountain climbing and other sports occasions. It not only has a good heat preservation effect, but also can withstand certain impacts and wear. The large-capacity design meets the needs of long-term exercise and is your ideal choice for outdoor activities. Please be careful to avoid collision with sharp objects when in use to prevent affecting the insulation effect.