Bigger adventures need bigger sips.
The Hydro Flask 18 oz Kids Wide Mouth Bottle with Straw Cap is perfect for active kids who need a little more hydration throughout the day. Designed with an easy-to-use straw lid, durable construction, and temperature-locking insulation, it’s ready to go wherever they do — from school to soccer practice to the trail.
TempShield™ Insulation
Double-wall vacuum insulation keeps drinks cold for up to 24 hours, so kids stay refreshed no matter the weather.
Pro-Grade Stainless Steel
Made with 18/8 stainless steel for pure taste, no flavor transfer, and rugged durability built for everyday tumbles.
Straw Cap
Easy for kids to sip without tipping, and leak-resistant when closed — ideal for backpacks, lunchboxes, and on-the-go fun.
Durable Powder Coat
Bright, kid-friendly color that’s easy to grip and resistant to wear, tear, and slippery hands.
Product Benefits
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Larger 18 oz capacity for growing hydration needs
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TempShield™ insulation keeps drinks cold up to 24 hours
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Leak-resistant Straw Cap for easy, mess-free sipping
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Durable 18/8 Pro-Grade Stainless Steel construction
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BPA-Free and Phthalate-Free
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Dishwasher safe
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Not for use with hot liquids
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Fits most cup holders
Size & Dimensions
18 oz
Volume: 532 mL
Mouth Diameter: 2.3″
Diameter: 2.91″
Height: 8.4″
Weight: 11.2 oz