Durable Borosilicate Glass: The Sursip 32 oz Water Bottle is made from BPA-free borosilicate glass, offering a safe and reusable solution that’s both leakproof and dishwasher safe, it’s designed to withstand your active lifestyle | Stay Hydrated with Time Markers: With easy-to-read time markers, this 1 liter water bottle helps you track your daily water intake. Whether you're at work, hitting the gym, or out and about, these hourly reminders make it easy to stay on top of your hydration goals | Non-Slip Silicone Sleeve for Protection: The food-grade silicone sleeve not only offers a secure grip but also provides a protective layer against accidental drops. It's perfect for any environment, whether you're indoors or on an outdoor adventure | Portable and Ready for Any Occasion: Designed for convenience,this lightweight bottle is easy to carry wherever you go.The included ice tray adds versatility,keeping your water cold and refreshing no matter where you are | Dishwasher Safe (Bottle and Sleeve)：Enjoy hassle-free cleaning with a dishwasher-safe bottle and silicone sleeve. Please remember to hand wash the bamboo lid to keep it in the best condition