Features: Licensed Food Contact Safety: Manufactured with food-contact grade silicone that is unscented and exempt harmful chemicals, guaranteeing drinking water safety and lasting physical integrity. extreme-Portable compressible Design: Folds compactly into pockets or bags when empty, then expands to full capacity for running, cycling, and hiking with minimal carry weight. remote moisturization framework: Integrated chew gate or straw enables continuous drinking during activities like running or cycling without breaking step. Multi-Capacity Selection: Available in sizes ranging from 300ml for short workouts to 1000ml for extended footpaths, meeting varied moisturization demands based on activity duration. Full-Scenario Sports Adaptation: Ideal for running, cycling, hiking and daily training, with soft yet resilient silicone construction ensuring comfortable use and influence resistance. Specifications: Substancemail: Food grade processor Colorebog: Blue\Transparent Capacity：300ml/400ml/500ml Weigheightermeterror: 684g Sizemail: 6x6x17cm Package Includes: Sports soft water bag 1pc note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!