The size of this cup is 2." * 3.4" after folding and is 5.5" * 3.4" before folding. Its material is durable, non-toxic, and does not contain bisphenol A, making it safe to store consumable liquids. It also has heat resistance and is safe for both hot and cold drinks. After folding, it takes up less space and is easy to carry. It is very suitable for outdoor sports, running, cycling, travel, hiking, and the gym. Can customize your logo and pattern.