Stainless Steel Thermos Cup Simple Lightweight Bouncing Lid Portable Straight Water Cup 1. Material: The interior is made of 304 stainless steel + food grade plastic + food grade silicone. Double layer vacuum technology. 2. Made of high-quality food-grade 304 stainless steel, anti-corrosion and anti-rust. Featuring vacuum-sealed technology and double-wall construction, it's vacuum insulated for maximum temperature retention, keeping drinks hot for up to 24 hours and cold for up to 6 hours. Not easy to rust, corrode and easy to clean. 3. A very useful one-handed opening lid with a food-grade silicone plug and silicone seal ring, high temperature resistance, aging resistance, tight seal, durable and unbreakable. Perfect for pouring hot liquids, the lid features a silicone seal for a secure leak-proof seal. 4. The surface of the fuselage is made of environmentally friendly resin paint. Through automatic point spraying technology, the paint has strong adhesion and is not easy to scrape off the paint. Bright colors show more fashion and luxury. 5. The non-slip bottle bottom and reinforced bottom make the anti-drop performance stronger, and the bottom adopts concave-convex design to make the thermos cup stable. Specification: Material : Stainless Steel white color Capacity: 500ML Size: 22-6.5CM