Standard Mouth Flex Straw Cap
Product details
Stay hydrated effortlessly with the leakproof, insulated Flex Straw Cap for your Standard Mouth Hydro Flask. Enjoy ice-cold refreshment on the go, thanks to its easy-to-trim straw and comfortable flex strap. This cap is designed for maximum temperature retention, keeping your drinks cold for longer. Plus, it's easy to clean with removable components and is BPA-free and dishwasher safe. Not intended for hot liquids.
- Leakproof design
- Insulated to maintain cold temperatures
- Easy-to-trim, flexible straw
- Comfortable flex strap for carrying
- Dishwasher safe and BPA-free
Standard Mouth Flex Straw Cap
Product details
Hydro Flask FAQ
Common questions about Hydro Flask
Learn more about what makes Hydro Flask unique.
What is TempShield insulation?
TempShield is Hydro Flask's double-wall vacuum insulation — it keeps cold drinks cold for up to 24 hours and hot drinks hot for up to 12 hours by eliminating heat transfer between the walls.
Which Hydro Flask size is right for me?
The 21 oz is ideal for short outings and fits most cupholders. The 32 oz is the all-day everyday choice. The 40 oz is best for long hikes, gym sessions, or anyone who needs to stay hydrated all day without refilling.
What makes Hydro Flask worth it?
Beyond the colour range, Hydro Flask pairs proven TempShield insulation with a durable powder-coat finish, a huge accessory ecosystem (straw lids, boots, slings), and a lifetime warranty — a stylish, leak-resistant bottle built to last for years.
Is Hydro Flask lead-free?
Yes — Hydro Flask has been proudly lead-free for over a decade, with no lead used anywhere in its construction, which is a deciding factor for many buyers comparing insulated bottles.
