Materials Science: 1. Internal 304 stainless steel 2. External 201 stainless steel Size: 22.5*6.5*6.5cm Capacity: 500ML Package includes: 1 * Insulation cup Explain: 1. Clean the cup before first use. 2. First clean the inner tank with a small amount of hot water or ice water (do not use steel wire balls), then pour it out and clean it with boiling water or ice water to ensure better insulation effect. 3. Please clean and keep dry after each use. 4. It is not recommended to store carbonated drinks in the cup for a long time to prolong the service life of the insulated cup. 5. Do not get close to or hit the heat source violently. 6. Keep out of the reach of children to avoid scalding. 304 Stainless Steel Cup, Intelligent Temperature Display Screen, Visible Temperature The Cup Mouth Is Smooth And The Shape Is Unique You Don't Have To Test Your Temperature With Your Mouth To Avoid Burns. 360 ° Rotation, No Need To Worry About Water Leakage, Good Sealing Suitable For Easy Travel, Outdoor Sports, Office, Beach, School, Picnic, Hot Yoga, Hiking, Camping, Cycling, Running, Walking, Gym, Fitness, Etc Durable Heat Preservation, The Vacuum Of The Cup Will Block The Heat Transfer