●● Made of high quality titanium, it is lightweight, never rust, corrosion resistant to acid and alkalis, scratch resistant and heat resistant. High-quality base material, heat and cold preservation, high temperature resistance, deformation protection and extend the life of the cup. ●● Size: 300 ml: (D) 65 x (H) 166 mm, approx. 209g Insulation effect: approx. 45°-50° after 6 hours. 450 ml: (D) 65 x (H) 223 mm, approx. 257g Insulation effect: approx. 50°-55° after 6 hours. ●● The bottle mouth has a large diameter, which is not easy to spill when filling or pouring water and is easy to clean. The lid has a built-in sealing ring made of food grade silicone, which is not easy to tighten or fall off. ●● The ultra-light feature of pure titanium reduces wrist strain due to an overwhelming weight, light weight and no hand fatigue. ●● The bottom of the cup is also equipped with a thickened English anti-slip pad made of "titanium", which is wear-resistant and non-slip and stable and does not fall off easily even on a smooth glass surface. ●● Independent tea leak design, fine laser cutting net, easy separation of the slag, the tea leaves are completely separated and the tea soup is softer. ●● The edges are polished and smooth. No harm to hands or mouth, which can provide you with a good experience. ●Titanium is a human-friendly metal, the oxide layer on the surface is antibacterial, which makes it not easy to react with substances, preserving the original taste of the drink.