Hydro Flask 21 oz Standard Mouth Flex Straw Bottle NZ

Hydro Flask 21 oz Standard Mouth with Flex Straw Cap

The Hydro Flask 21 oz Standard Mouth with Flex Straw Cap is a versatile insulated water bottle designed for easy everyday hydration. Compact, durable and cupholder-friendly, it combines Hydro Flask’s proven TempShield® insulation with a convenient Flex Straw Cap, making it ideal for work, travel, training, road trips and everyday adventures.

With a 21 oz (621 ml) capacity, this bottle offers a great balance between hydration and portability. Hydro Flask’s TempShield® double-wall vacuum insulation keeps drinks cold for up to 24 hours, while the durable stainless steel construction helps maintain pure taste with no unwanted flavour transfer.

The Flex Straw Cap makes drinking on the move simple — flip it open and sip through the integrated straw. The cap is leakproof when closed, helping keep your bag and gear protected while you're travelling. Its slim Standard Mouth profile also fits most cupholders, making this an especially practical Hydro Flask for commuting and road trips.

Easy to fill, comfortable to carry and dishwasher safe for straightforward cleaning, the Hydro Flask 21 oz Standard Mouth is built to handle daily use while keeping your water refreshingly cold throughout the day.

Features

• 21 oz / 621 ml capacity
• TempShield® double-wall vacuum insulation
• Keeps drinks cold for up to 24 hours
• Flex Straw Cap for easy drinking
• Leakproof when closed
• Fits most cupholders
• Durable stainless steel construction
• Pure taste with no flavour transfer
• BPA-free
• Dishwasher safe
• Compact, easy-to-carry design
• Built for everyday hydration

Perfect For

• Everyday hydration
• Work and commuting
• School and study
• Gym and training
• Road trips
• Travel
• Beach days
• Surf trips
• Hiking and outdoor adventures
• Everyday carry

Why You’ll Love It

The Hydro Flask 21 oz Standard Mouth with Flex Straw Cap is an excellent choice when you want Hydro Flask performance without carrying a larger bottle. Its slim, cupholder-friendly design makes it particularly convenient for everyday use, while up to 24 hours of cold insulation and the leakproof-when-closed Flex Straw Cap make staying hydrated simple wherever the day takes you.