Double Wall Vacuum Insulation: Built with advanced double wall vacuum technology, this insulated bottle keeps beverages icy cold for 24 hours and maintains hot drinks warm up to 12 hours. The sweat-free outer surface avoids condensation and prevents wetting your bags or tabletop 2 Leak-Proof Lids: Comes with 2 versatile leak-proof lids for flexible use. Tightly sealed design effectively stops spills, allowing you to put the flask in backpacks without worrying about messy leakage Large-Capacity Hydration Flask: 40-ounce capacity, reducing the hassle of frequent refilling. Good ideal hydration choice for gym sessions, hiking, camping, road trips and office daily use Safe & Healthy Drinking Experience: Features premium food-safe 18/8 stainless steel liner and is completely BPA-free. Deliver clean taste without strange odors, offering safe hydration for long-term daily use Daily Companion: Sturdy structure built for outdoor use. Wide mouth design for quick and easy cleaning, suitable for daily commuting, road trips and all-day adventures to meet your continuous water need IDEUS Insulated Stainless Steel Water Bottle with 2 Leak-Proof Lids, Thermal Water Flask for Hiking Biking, 40oz, Bright Yellow