Hydro Flask 12 oz Wide Mouth With Straw Lid Water Bottle. The kid’s 12 oz stainless steel water bottle is the perfect insulated bottle for school, family hikes and everyday hydration. The straw cap makes sipping easy, and the double-wall stainless steel construction keeps cold drinks cold for up to 24 hours. For ages 3+. Straw cap. TempShield double-wall vacuum insulation keeps contents cold up to 24 hours. Made with 18/8 pro-grade stainless steel for durability, pure taste and no flavor transfer. Color Last powder coat is dishwasher safe and stays slip-free and colorful. Perforated Bottle Boot for added protection. Integrated name tag. BPA-free. Dishwasher safe. Not for use on a stove, in a microwave or freezer. Diameter: 3.05". Height: 6.95". Weight: 0.60 lbs. Imported.