Standard Flex Straw Cap 621 ml (21 oz) Bottle

Since I have had my pink Hydro flask, I have been amazed at how well it has kept liquids cold. I left a full flask of ice cold water in it over 36 hours and was shocked that it was still ice cold when I actually sucked it up the straw. This was an amazing find now although I’ve never tried it with hot liquids I have no doubt that this would keep any liquid. I have hot all day no trouble at all. The seal must be absolutely superb for it to have kept my drink cold for so long when it comes to functionality I find it suits my needs as my hands are not very strong. I like the fact it has a strap handle so I can hook it out to bring it to me. I like the fact that I do not have to push very hard on the hinge of the straw for it to come up and although at the beginning I couldn’t unscrew the cap that was not because it wasn’t easy to undo, but because my hands are not strong enough. With such a wonderful choice of colours I chose pink because it matched my cupholder which it fits very very well. Although some people might think the price is quite high, I think considering this has kept everything colder than I ever expected longer than I ever expected. It is definitely worth every penny I spent and I’m considering buying a second one. If I could give it 10 stars I would that’s how good this is-if you haven’t bought one yet I can definitely recommend you do.

Light weight no leaks and keeps drinks cool for hours

Hydro Flask Water bottles are my go to - so elegant and they have a variety of colors.

Love it, really keeps water cold for at least 6 hours, could be longer. All parts are easy to use and clean, would definitely recommend.

This flask is great given the price point, I would go for a bigger size if you’re somebody who takes it outdoors. It holds temperature with ice cold water for 12+ hours. I did drop it once not long after owning it and it did leave a slight dent on the bottom, it’s purely aesthetic and hasn’t affected the function of the flask. The handle on the top is very useful for carrying around easily.

This 621ml Hydro Flask with the Flex Straw Cap is my daily essential. Keeps water ice cold for 24+ hours, even in the car on hot days. The straw cap is perfect — easy one-handed drinking and no spills when the lid’s closed. Standard mouth fits ice cubes fine. Powder coat is grippy and doesn’t sweat. Built like a tank and the 21oz size is ideal to carry without being bulky. Expensive but worth every penny. Hydration actually feels easy now.

Great colour, keeps drinks really cold and a great size

Really well built and should last years, looks great also, keeps things really cold especially in this heat

I live in AZ and use this water bottle when I play tennis outdoors in very warm temperatures. This bottle holds 24 oz of water and keeps it very cold. It is easy to clean and fits in the door of the refrigerator so it is cool and ready to grab when I head out for my tennis match.

La marque Hydroflask est mondialement connu, je me suis laissé tenter par cette gourde isotherme qui ma foi est très utile par temps chaud ou froid, peu importe, on peut l’emmener partout, pas encombrant donc parfait.

A lovely and sturdy flask. The 21-ounce size is ideal for travel and for taking to meetings, and fits nicely into my treadmill's cup-holder. Keeps water cold and refreshing. The flex cap is markedly easier to drink with than a regular straw.

Hydro Flask is always a safe buy! What to say more! Is our 3rd bottle and all just perfect!

Kind hat sich sehr darüber gefreut. Ich fand die Flasche viel zu teuer. Hat schon leider eine Delle nach kurzer Zeit.