Features: Durable: Both exterior and interior walls are made of BPA-free food-grade 304 stainless steel. The water bottle can be rotated in any direction to prevent water leakage and maintain the water temperature to the greatest extent. High quality: keep the water or liquid warm for up to 12 hours or refrigerate for up to 24 hours. If you put some ice cubes in it in the hot summer, this is a big advantage. Capacity: 12/17oz (350/500 ml) The bullet type is the best size to keep moisture outdoors and can be easily put in the bag. The sealing plug prevents liquid leakage, and the cap can be used as a water cup. Portable: It can be used in various occasions, such as sports, outdoor work, yoga class, gym, and for health.Lightweight, stylish, strong, suitable for most car cup holders, bottle cages and your bag. for Creative fashion design. Suitable for all ages. Is a good choice as a gift. Specifications: Material:Plastic for amd Metal Color:Black, Copper and Gold Size: Approx. 27.6x6.7x4.5 for cm/10.86x2.63x1.77 inches(500ML) Size: Approx. 24.6x6.7x4.6 for cm/9.68x2.63x1.for 81 inches (350ML) Note: 1.Please allow 0-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3.Other parts are not included. Thanks for your understanding. Package includes: Type 1: 1 x Stainless Steel Thermos Bottle (350ML) Type 2: 1 x Stainless Steel Thermos Bottle (500ML)