Feature: 1. [High Quality Materials] The inner wall is made of 304 grade food grade stainless steel and the outer shell is made of high quality 201 stainless steel, they are safe and healthy to use. 2. [Easy To Clean] The mouth can be cleaned by removing the mouth, the mouth of the cup will not cut the lips, and the diameter of the cup is large, and the detachable filter can filter residues such as tea leaves. 3. Good Performance: Sitting anywhere in any temperature condition, your cold drink will stay chilled for up to 24H, or your coffee or tea will stay hot for up to 12H (above 60 degrees C / 140 Fahrenheit ) and 6H (above 70 degrees C / 158 Fahrenheit ). 4. [Perfect Design] Stainless steel water bottle designed to reduce spillage and shaking. The bottle is leakproof and safe on the go, 500ml / 17oz water bottle fits most cup holders and fits easily in a travel bag. 5. [Multi Purpose] The cup bottom is not easy to slip off and is durable. Take this portable water bottle with you when hiking, biking, shopping, or leaving it at the office. Thermal cup is a great gift for any occasion. Specification: Item Type: Thermal Cup Material: 304 Stainless Steel Inner Wall + 201 Stainless Steel Outer Shell Height: Approx. 23.5cm / 9.3in Lid Diameter: Approx. 6.5cm / 2.6in Weight: Approx. 291g / 10.3oz Capacity: 500ml / 17oz Insulation Performance: Above 70 degrees C / 158 Fahrenheit : 6 Hours Above 60 degrees C / 140 Fahrenheit : 12 Hours. Package List: 1 x Thermal Cup Note: Please allow some errors due to manual measurement.