The Hydro Flask Wide Mouth 20 oz Bottle with Flex Sip Lid is built for performance and convenience, featuring TempShield double-wall vacuum insulation that keeps drinks cold for up to 24 hours or hot for up to 12. The leakproof Flex Sip Lid is perfect for transporting hot beverages, while the 18/8 pro-grade stainless steel ensures durability, pure taste, and no flavor transfer. Ideal for custom engraving or printing, it's a top choice for personalized drinkware.