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Sevenstore UK£35.00Visit shop Hydro Flask Unisex Black Standard Flex Straw Cap 21Oz Bottle ( - One Size) - Size One Size
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This Hydro Flask 621ml Standard Flex Straw Cap bottle in Black is designed for active individuals seeking reliable hydration on the go. Its key benefit is maintaining beverage temperature for extended periods, with a convenient straw for easy sipping, though the standard mouth size may not fit all extra-large ice cubes. This durable stainless steel bottle features double-wall vacuum insulation, a leakproof cap with a built-in straw, and a comfortable flex strap for easy carrying, making it ideal for daily commutes, travel, and outdoor activities.
| Colour | Black |
|---|---|
| Model Part Number | S21CFS001 |
| Brand | Hydro Flask |
| Container Volume | 621ml |
Yes, the Flex Straw Cap is designed to be leakproof when securely closed. The straw also has a valve that prevents leaks when the cap is sealed.
The bottle and cap are top-rack dishwasher safe for easy cleaning. Hand washing with warm water and soap is also quick and effective.
Hydro Flask generally does not recommend using their bottles for carbonated beverages, as the pressure build-up can be dangerous and may damage the bottle or cap.
Hydro Flask offers a limited lifetime warranty against manufacturing defects. Please refer to the official Hydro Flask website for detailed warranty terms and conditions.
The powder coat finish on Hydro Flask bottles is durable and designed to resist fading under normal use. However, excessive exposure to direct sunlight or abrasive materials may cause wear over time.
Yes, replacement Standard Mouth Flex Straw Caps are typically available for purchase separately from authorized Hydro Flask retailers or directly from the Hydro Flask website.
Ensure the lid is screwed on tightly and the straw mechanism is properly seated. Check for any visible damage to the bottle. For optimal performance, pre-condition the bottle by filling it with hot water for hot beverages or cold water for cold beverages for a few minutes before use.
Ensure the straw is fully extended and correctly attached to the cap. Check the straw and valve for any debris or blockages. Disassemble the straw mechanism if possible and clean thoroughly.
Verify that the Flex Straw Cap is fully closed and securely tightened onto the bottle. Check the silicone seals on the straw and within the cap for any damage or debris. Ensure the straw is properly seated.
This indicates a failure of the vacuum insulation. Check the bottle for any dents or damage. If the issue persists, contact customer support as the insulation may be compromised.
Setup:
Your Hydro Flask bottle comes ready to use. Simply remove any packaging, wash the bottle and cap according to the care instructions below, and fill with your desired beverage.
Compatibility:
This bottle is designed with a Standard Mouth opening. It is compatible with all Hydro Flask Standard Mouth caps. The bottle's slim profile is designed to fit most standard cupholders and backpack side pockets.
Care Instructions:
