UPSTYLE Thermos Water Bottle Stainless Steel Insulated Vacuum Cups for Kids Portable Travel Mug Sports Tumblers Flask Double Layer 24 Hour Heat Retention (Matte Gray) SPEC: 7cm*25.5cm(H), Capacity: 17oz(500ml), Material: Made of 304 Stainless Steel + Food Grade Plastic + Food Grade Silicone. 4 luxury colors to choose: Black, White, Golden and Red. Made of high quality food grade 304stainless steel, it's anti-corrosion and rust prevention. Used the vacuun-seal technology and double-wall construction, vacuum insulation for maximum temperature retention, keeping drinks hot for as long as 24hrs and cold for 6hrs . It's not easy to rust, corrosion and easy to clean. The top is the Screw seal sealing plug, with food grade PP bottle stoppe and silicone sealing ring, resistance high temperature, resistance aging, strong seal, durable used and unbreakable. Perfect for pouring out hot liquid and the cover used silica gel seal ring, security leak proof seal. The lid-cup could use to drink as a cup, very useful. The body surface using environmentally friendly resin paint, through the automatic point spraying technology, so that the adhesion of paint is strong, not easy to scrape off the paint. Bright colors performance show more Fashion and Luxury. Anti slip bottle bottom and the reinforcement bottom, make the anti-breaking performance more stronger, and the bottom used concave and convex design, make the vacuum cup steadily.