Home /Hydro Flask /Standard Mouth /Hydro Flask Flex Straw Cap for Standard Mouth Bottles – Leakproof Straw Lid

hydro-flask-flex-straw-cap-for-standard-mouth-bottles-leakproof-straw-lid image 1

hydro-flask-flex-straw-cap-for-standard-mouth-bottles-leakproof-straw-lid image 2

hydro-flask-flex-straw-cap-for-standard-mouth-bottles-leakproof-straw-lid image 3

hydro-flask-flex-straw-cap-for-standard-mouth-bottles-leakproof-straw-lid image 4

hydro-flask-flex-straw-cap-for-standard-mouth-bottles-leakproof-straw-lid image 5

hydro-flask-flex-straw-cap-for-standard-mouth-bottles-leakproof-straw-lid image 6

hydro-flask-flex-straw-cap-for-standard-mouth-bottles-leakproof-straw-lid image 7

hydro-flask-flex-straw-cap-for-standard-mouth-bottles-leakproof-straw-lid image 8

Standard Mouth

Hydro Flask Flex Straw Cap for Standard Mouth Bottles – Leakproof Straw Lid

Name: Hydro Flask Flex Straw Cap for Standard Mouth Bottles – Leakproof Straw Lid
Brand: Hydro Flask
SKU: THE-STA-039
Price: 7.99 USD
Availability: InStock
Rating: 4.1 (8 reviews)

4.1 (8)

$7.99

Hydro Flask Flex Straw Cap for Standard Mouth Bottles: leakproof, insulated straw lid with two cut-to-fit straws – now $7.99 at The Vessel Merchant with code VESSEL10 for extra savings.

In Stock

- 1 +

Get it in 3–5 business days.

18 people are viewing this item. 13 sold today. Only 6 left in stock.

Buy more, save more

hydro-flask-flex-straw-lid-replacement-for-wide-mouth-bottles-capri-blue-2-straw image 1

Pair withHydro Flask Flex Straw Lid Replacement for Wide Mouth Bottles – Capri Blue, 2 Straws Included$10.00

Categories : Standard Mouth

SKU : THE-STA-039

Description

Hydro Flask Flex Straw Cap – Leakproof Straw Lid for Standard Mouth Bottles

Upgrade your Hydro Flask Standard Mouth bottle with the official Hydro Flask Flex Straw Cap. Designed for cold refreshment on the go, this leakproof straw lid flips open for easy sipping and clicks shut to prevent spills. Perfect for school, sports, gym, travel, and everyday hydration. Get it now for only $7.99 at The Vessel Merchant – an unbeatable price for genuine Hydro Flask quality. Use code VESSEL10 at checkout for an extra 10% off.

Specifications

Brand: Hydro Flask
Model: Flex Straw Cap
Product Type: Replacement Straw Lid for Standard Mouth Bottles
Compatibility: All Hydro Flask Standard Mouth bottles
Materials: BPA-free plastic, food-grade silicone straws
Capacity: Fits Standard Mouth (not Wide Mouth)
Dishwasher Safe: Yes (top rack)
Leakproof: Yes, when closed

Key Features & Benefits

Leakproof when closed – no more spills in your bag
Flip-open design for one-hand sipping
Includes two straws with trim ruler – cut to perfect length
Dishwasher safe and easy to disassemble for cleaning
BPA-free and safe for cold beverages only

Use Cases

Perfect for daily hydration at school, the office, gym, hiking, commuting, and home. The straw cap makes sipping easy without tilting your bottle – ideal for driving or working at a desk.

Why Buy from The Vessel Merchant?

Get genuine Hydro Flask accessories at outlet prices. At just $7.99 (compare at $N/A), you save big. Plus, free shipping on orders over $45 and extra 10% off with code VESSEL10. This is the best deal on a Hydro Flask straw cap online.

Features

Genuine Hydro Flask quality: leakproof, insulated straw lid engineered for Standard Mouth bottles
Two cut-to-fit straws plus trim ruler ensure perfect fit for your bottle
Only $7.99 – 10% off with code VESSEL10 and free shipping on orders over $45
Model: Flex Straw Cap
Includes: Cap, 2 straws, trim ruler
Material: BPA-free plastic, food-grade silicone
Leakproof: Yes
Product Type: Replacement Straw Lid
Compatibility: Standard Mouth Bottles
Dishwasher Safe: Yes
Seller: The Vessel Merchant
MPN: Flex Straw Cap

Product Details

Complete Your Hydro Flask System

This Flex Straw Cap is the perfect companion to your Hydro Flask Standard Mouth bottle. It transforms your bottle into a convenient sipping vessel for all-day hydration. Whether you're at your desk, in the car, or at the gym, the straw cap makes it effortless to stay refreshed.

Easy to Clean & Maintain

The lid disassembles for thorough cleaning, and the straws are dishwasher safe. Simply rinse and go – no more lingering tastes from previous drinks.

Shop with Confidence

We offer a low price guarantee and free shipping on orders over $45. Plus, use code VESSEL10 for 10% off today. Don't miss out on this affordable hydration upgrade.

Frequently Asked Questions

How do I cut the Hydro Flask straw cap straw to fit my bottle?

The Hydro Flask Flex Straw Cap comes with two straws and a trim ruler. Insert the straw into your bottle, mark the length using the ruler, then trim the straw with scissors to the desired length. The straws are designed to be easily trimmed for a perfect fit.

Is the Hydro Flask Flex Straw Cap leakproof?

Yes, the Flex Straw Cap is leakproof when closed. The lid clicks shut to create a secure seal, preventing spills in your bag. However, it should not be used with hot liquids or carbonated beverages.

Where can I buy the Hydro Flask Flex Straw Cap at the best price?

You can buy it at The Vessel Merchant for only $7.99, which is a great deal. Use coupon code VESSEL10 at checkout for an additional 10% off, and enjoy free shipping on orders over $45.

Can I use the Hydro Flask Flex Straw Cap on a Wide Mouth bottle?

No, this straw cap is specifically designed for Standard Mouth Hydro Flask bottles. For Wide Mouth bottles, you would need a different cap, such as the Hydro Flask Wide Flex Straw Cap.

Is the straw cap dishwasher safe?

Yes, the Hydro Flask Flex Straw Cap is dishwasher safe on the top rack. You can also disassemble the parts for thorough cleaning. Hand washing is recommended to extend the life of the straws.

Customer Reviews

8

5.0

z*****y

Verified

Perfect upgrade

I bought this for my Hydro Flask and it's a game changer. The straw makes it so easy to drink, especially while driving. It's completely leakproof - I've tested it upside down. The two straws are a nice bonus. Highly recommend.

4.0

g***e

Works as expected

Good quality lid. It fits my standard mouth bottle perfectly. The straw is comfortable to use. I wish it came in more colors, but the black is fine. It's a bit pricey for a lid, but it's Hydro Flask quality.

5.0

f*****o

Verified

Fantastic, no leaks

I was hesitant to buy this, but I'm glad I did. I used to have issues with spills, but this cap seals completely. The straw is thick and durable. Easy to clean. It's become my favorite way to drink from my bottle.

3.0

a*****u

Verified

Decent but not perfect

The lid is nice, but the straw is a bit too long for my bottle. I had to cut it. It doesn't leak, but the mechanism is a bit stiff. It's okay for the price.

5.0

d*v

Verified

Love it!

This straw cap is awesome! I can sip my water easily at the gym. It's leakproof, so I can toss it in my bag. The straws are long enough. Definitely worth it.

4.0

w****c

Verified

Works well, but straws are extra

The cap is good, but I wish it came with a cleaning brush. The straws are fine. It fits my bottle perfectly. No leaks so far. I'd recommend it if you like drinking with a straw.

2.0

x***b

Not worth it

The lid leaked on the first use. I'm not sure if I got a defective one, but it's disappointing. I'll stick with the original cap. It's also overpriced.

5.0

w*c

Verified

Convenient and leakproof

I use this cap daily. It's so convenient to drink from without tilting my head. The seal is tight - I've put it in my backpack many times. Great product.