• 500 ml water bottle made of odor-free food-grade plastic. • Design with time markers and capacity scale to facilitate daily hydration tracking. • 100% leak-proof system with silicone seal and safety lock to prevent accidental openings. • Lid with spring mechanism allowing quick and easy one-handed opening. • Includes internal filter and a portable carrying strap for greater convenience in outdoor activities. • Anti-slip frosted texture and wide mouth for easy filling with ice cubes and cleaning. • Temperature resistant between -10 °C and 80 °C, ideal for school, sports, and daily use.