

💦 Upgrade your sip game with leakproof ease and effortless style!
The Hydro Flask Standard Mouth Flex Straw Cap is a durable, BPA-free replacement lid designed for standard mouth Hydro Flask bottles. Featuring a leakproof seal, an easy-to-trim straw for a custom fit, and removable components for thorough cleaning, this dishwasher-safe accessory enhances your hydration experience while ensuring long-lasting, safe use. Perfect for active professionals seeking convenience and reliability in their daily water intake.





















| ASIN | B09D8RPYKJ |
| Best Sellers Rank | #2,904 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #54 in Water Bottle Accessories |
| Brand | Hydro Flask |
| Brand Name | Hydro Flask |
| Color | BLACK |
| Customer Reviews | 4.6 4.6 out of 5 stars (10,010) |
| Date First Available | January 19, 2022 |
| Global Trade Identification Number | 00810028842878 |
| Included Components | Water Bottle Accessory |
| Is Dishwasher Safe | Yes |
| Item Dimensions LxWxH | 2.9 x 2.3 x 3 inches |
| Item Package Dimensions L x W x H | 11.5 x 4.69 x 2.68 inches |
| Item Weight | 0.01 Pounds |
| Manufacturer | Hydro Flask |
| Material | Plastic |
| Model Name | Flex Straw Cap |
| Model Year | 2022 |
| Number of Items | 1 |
| Number of Pieces | 1 |
| Package Weight | 0.13 Kilograms |
| Part Number | SFS001 |
| Size | Standard Mouth |
| Style | Flex Straw |
| Suggested Users | unisex-adult |
| UPC | 810028842878 |
| Warranty Description | Lifetime |
A**D
Almost Perfect
You can't use it without the straw and you have to use the straws it comes with or it will leak, even if it seams like the same size. But other than that it's a great replacement for the usual cap. I know it sounds simple but I love it because I'm always trying to find ways to get myself to drink more water and the flip straw rather than having to unscrew the cap makes a huge difference in my water intake.
J**R
This should be standard on all models. Potential health issues with the plastic lids.
This is exactly how they original lids were designed, then they went to plastic for almost all models. The plastic ones have a thin flat gasket and not an o-ring. It's super hard to get it to come out for cleaning. The plastic ones also are made of two parts that are snapped together in the factory. This is NOT a water-tight seal. So gunk gets inside and is a potential health problem. I drilled a hole in the plastic one and gray goo came out. The entire design of the plastic lids is faulty as cleaning is almost impossible. This, though, is all stainless steel. No seams or ways for water to get inside. It also has a standard o-ring that takes a second to remove and wash. This is also a normal industry-standard size. This is not a knock-off, but made by Hydro Flask/what came on the original model years ago and now is a replacement part. I think they sell one or two models with the stainless steel lid and everything else is plastic. This is a mandatory upgrade that will make your flask last 10-20 years without health issues.
E**A
It works
Worked as described.
F**R
A must have
I am not sure why this doesn't come standard. I am sure it probably has something to do with adding revenue, but it is so much better than the cap that comes with the bottle. I like this because it makes it easy to drink one handed. I am a HS principal, and I carry my Hydroflask around on duty with me. This make is easy to get a drink without having to find a place to drop my laptop and anything else I might be carrying with me. It cleans up well. It is not 100% leakproof. It will leak if you hold it upside down or shake it. Not huge amounts, but it does leak. I made the mistake of leaving it in my backpack on a flight to Europe last winter holiday. It sat in the overhead on its side for 8 hours. It leaked all over the overhead, and was sloshing around. My family was the only one that had luggage in that bin, so the only was the only looks I got.
D**A
Bottle cap with straw
Good product, does not leak when tipped over as stated by some people. You get extra straw so that is nice. Little costly so only 4 stars.
L**Y
Good buy!
Very nice! Closes tightly. Easy to take apart and clean. I like that the softer parts are red so that mold can’t hide.
S**N
My HydroFlask Finally Has the Lid It Deserves
If you’re anything like me, your water bottle is basically your emotional support accessory — but the original lid? Not always the friendliest when you’re trying to drink on the go or during a Zoom where you’re pretending not to drink on the go. Enter: THIS lid. First, the dust cover is genius. I didn’t know how much I wanted one until I had it. No more mystery crumbs touching the mouthpiece. No more “Did I just sip my own chapstick?” moments. Flip, sip, done. It comes with two long straws you can cut to size (teacher hack: kitchen scissors work great). The handle is soft and flexy, making it easy to loop on a finger when your hands are full — which, let’s be honest, is always. It also fits basically every standard-mouth water bottle ever invented: Hydro Flask, Iron Flask, Simple Modern, Klean Kanteen… if it’s 1.7 inches inside, this thing probably fits it better than my jeans fit me after Thanksgiving. The lid feels durable but not bulky, doesn’t leak, and the flip-top makes it ridiculously easy to use one-handed. Great for workouts, car rides, or just surviving another day of “teacher hydration goals.” Bottom line: If your water bottle needs a glow-up, this is it. Highly recommend.
W**N
Great replacement lid!
Had bought my Hydro Flask years ago which came with a sports push/pall cap. Immediately after purchasing, I dropped the bottle and the lid would randomly leak. I had originally thought I bent the seal, but one day the entire push/pull came completely apart revealing the inside plastic had broken. Made me realize a replacement cap was possible. Decided to go with this standard lid. It feels durable and clean. A would do a few drop tests, but I am quite confident this will hold up!
M**©
Totalement satisfait. J'ai commandé ce couvercle paille pour ma gourde d'une marque très connue qui n'était pas pourvue de ce système. La qualité du joint et de l'embout et des pailles que j'ai dû légèrement couper car trop longues donc parfait. Le test est totalement convainquant et je recommande ce modèle pour votre gourde qui ne sont pas pourvues de ce bouchon paille.
J**L
Je suis ravi de ce bouchon isotherme Flex Cap en métal pour ma gourde Hydro Flask ! Il fait un travail fantastique pour garder mes boissons à la température idéale pendant des heures. Ce que j’apprécie particulièrement, c’est sa facilité de nettoyage – un jeu d’enfant comparé à d’autres bouchons. Sa construction en métal inspire confiance et durabilité. C’est un excellent ajout à ma gourde, je le recommande fortement !
L**A
Works well, does not leak but DO NOT USE WITH WARM LIQUIDS, just cold drinks
H**E
Utile
B**B
Passt super, tolle Verarbeitung
Trustpilot
2 months ago
3 weeks ago