CAPACITY MARKINGS: Clear measurement indicators from 100ml to 1000ml with wave patterns for easy volume tracking | LEAK-PROOF DESIGN: One-touch flip lid with secure locking mechanism prevents spills while drinking or carrying | TRANSPARENT BODY: High-quality clear construction allows visibility of contents and features a protective silicone grip sleeve | PORTABLE SIZE: Perfectly sized water bottle with 1-litre capacity ideal for daily hydration needs | WIDE-MOUTH OPENING: Convenient top design allows for easy filling, cleaning, and adding ice cubes or fruit slices