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Which Hydro Flask Lid is the Best? (Wide Mouth Edition)

2/26/2024

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Which Hydro Flask Wide Mouth Lid is the Best?
Which Hydro Flask Wide Mouth Lid is the Best?

Which Hydro Flask Lid Should You Get?

Hydro Flask currently has 7 wide mouth lid options, so which one is the best for you?  I'll review each lid available, including 2 that many people have not seen before.  Each Hydro Flask lid has its own advantages and disadvantages, so it can help to know more so you can get the best lid for you and your situation.
Here's the quick list showing each of Hydro Flask's 7 available wide mouth lids as of today.  Keep scrolling down for the full details.
Hydro Flask Flex Cap
Hydro Flask Flex Cap
Hydro Flask Stainless Steel Flex Cap
Hydro Flask Stainless Steel Flex Cap
Hydro Flask Trail Series Flex Cap
Hydro Flask Trail Series Flex Cap
Hydro Flask Flex Sip
Hydro Flask Flex Sip
Hydro Flask Flex Chug
Hydro Flask Flex Chug
Hydro Flask Flex Straw
Hydro Flask Flex Straw
Hydro Flask Original Straw

Video Review of Hydro Flask's Wide Mouth Lids

​​We also cover this in a YouTube video if you'd prefer to watch the recap!​

First, Some Overall Guidelines about Hydro Flask's Lids

Before we dive in, I'm going to review some of the most common general questions we see about Hydro Flask's lids.
Are Hydro Flask's Wide Mouth Lids Interchangeable?
For the most part, yes!
​
With one exception, all wide mouth Hydro Flask lids fit all wide mouth Hydro Flask bottles.  If you're buying a new lid, just double-check that it's a wide mouth lid, not a standard, aka "narrow" mouth lid.
Picture
Exception: Beer Growler
Hydro Flask's 64 ounce beer growler has a different lid designed specifically to work better with carbonated drinks.
See on Amazon
Are Hydro Flask's Lid Dishwasher Safe?
Yes. Technically Hydro Flask's lids are all top-rack dishwasher safe according to Hydro Flask, as mentioned here.

From Hydro Flask: "All Hydro Flask powder coated bottles are dishwasher safe. Hydro Flask Coffee Mugs are not powder coated, and they are not dishwasher safe."
Should you hand-wash Hydro Flasks?
Even though Hydro Flask lids are all technically dishwasher-safe, I typically recommend handwashing so you can make sure some of those hard-to-reach areas are scrubbed.  Also, some of the lids have small pieces and seals that are better left to handwashing.

Either way, it's a good idea to also use Bottle Bright cleaning tablets or a similar alternative every month or so to give your bottle a deep clean.  These things really work!
How to Contact Hydro Flask Directly
I'm giving this information based on what I've read online, seen in person with their products, or heard back from Hydro Flask when I've submitted questions.  If you have additional questions, either leave a comment on our Youtube video or send us a message and I'll try to answer it, or you can out to Hydro Flask directly with the link below.  They're usually pretty good about getting back with answers within a couple days, and I've had great experiences with their customer support.
Contact Hydro Flask

Here are Hydro Flask's Available Wide Mouth Lids

Hydro Flask's Flex Cap
Hydro Flask's Flex Cap
Hydro Flask's Flex Cap (Lid #1)
This is the standard lid that comes with most Hydro Flasks that you unscrew completely to take a sip.

Pros
  • Typically comes standard so it doesn't cost extra
  • It is fairly easy to clean

Cons
  • Very basic
  • Prone to spilling water in your face, especially when you're on the road
See on Amazon
SplashPro Splash Guard
SplashPro Splash Guard
 Optional Add-On: SplashPro Splash Guard
Our SplashPro splash guard is designed specifically to fit around Hydro Flask's Flex Cap, so that's a great, cost-effective way to keep water out of your face.
See on Amazon
Hydro Flask's Stainless Steel Flex Cap
Hydro Flask's Stainless Steel Flex Cap
Under the Stainless Steel Flex Cap
Under the Stainless Steel Flex Cap
Hydro Flask's Stainless Steel Flex Cap (Lid #2)
I personally think should have been called the Flex Steel but maybe that's just me.  This is identical to the Flex Cap with one obvious difference: other than the handle and the seals, it's made entirely of stainless steel.

Pros
  • This is Hydro Flask's only option that has stainless steel instead of plastic under the lid
  • Prevents plastic contact with your water

Cons
  • Heavier
  • Have to buy it separately (unless Hydro Flask is running a promotion)
See on Amazon
(To select this lid, first click on the Flex Cap variation, then select the Stainless Steel color option.)
Hydro Flask's Trail Series Flex Cap
Hydro Flask's Trail Series Flex Cap
Hydro Flask's Trail Series Flex Cap (Lid #3)
​The 3rd lid is another variation on the Flex Cap.  Hydro Flask's Trail Series bottles are engineered to be more lightweight, and these changes are very obvious in the lid.  The handle is perforated and overall it just feels lighter than the standard Flex Cap.

Pros
  • Lightweight

Cons
  • Unable to purchase by itself, so you'll likely need to buy a Trail Series bottle
See on Amazon
Hydro Flask's Flex Sip
Hydro Flask's Flex Sip
Hydro Flask's Flex Sip (Lid #4)
This is designed for coffee or tea, and you simply twist the top a quarter turn to open and close it.

Pros
  • Leak-free (can be a problem with some other sip-style lids and covers)
  • Able to fully-disassemble for cleaning
  • Comes standard if you buy one of Hydro Flask's Coffee series bottles or can be purchased separately

Cons
  • Quite a few steps to clean properly (not bad once you're used to it though)
See on Amazon
Learn about Cleaning a Flex Sip
Hydro Flask's Flex Chug
Hydro Flask's Flex Chug
Hydro Flask's Flex Chug (Lid #5)
This lid has a narrower spout that has a separate cap, similarly to YETI's standard chug lid.

Pros
  • Simple and easy to clean
  • Easier to take big gulps of water without it splashing in your face
  • Good alternative to a Flex Cap with a SplashPro

Cons
  • The handle is much smaller than other Hydro Flask lids
  • Spout cap is completely detached instead of a tethered design like with Takeyas that I prefer, especially when driving so you don't have to worry about dropping the spout cap
See on Amazon
Takeya Active Spout Lid
Takeya Active Spout Lid
 Optional Alternative: Takeya Actives
Takeya has one of my personal favorite spout lids with a wide handle and tethered spout cap.
See on Amazon
Hydro Flask's Flex Straw
Hydro Flask's Flex Straw
Hydro Flask's Flex Straw (Lid #6)
I personally love this lid, but some customers have valid reasons for it not being their favorite option.

Pros
  • Removable insert makes it easier to clean more areas around the spout
  • Great handle for a straw lid

Cons
  • The spout must be completely flipped open to take a drink.  If it's rotated back even just a little, you'll be sucking air instead of water and it seems to be less forgiving than some other straw lids.
  • While I mentioned it's easier to clean more areas around the spout, that doesn't mean you can clean 100% of these spots and you'll probably want to pop the spout off every now and then to get to those hard-to-reach areas.  You have to be careful though, as this can lead to some wear-and-tear on your lid.
See on Amazon
Learn about Cleaning a Flex Straw
Hydro Flask's Original Straw
Hydro Flask's Original Straw
Hydro Flask's Original Straw (Lid #7)
My personal opinion is that this lid is the worst of them all, but I think it's still worth knowing about in case you have a different viewpoint.

Pros
  • Some people prefer the classic, simpler design
  • It's easier to pop off the spout to clean all areas around where the spout pivots compared to the Flex Straw
Cons
  • It feels like this lid is just a private label lid without any engineering because Hydro Flask needed a straw lid quickly years ago
  • Small single-finger handle
See on Amazon
FlavorFuze Pod Fruit Infuser
FlavorFuze Pod Fruit Infuser
Optional Add-On: FlavorFuze Pod Drop-In Fruit Infuser
Make your water more fun to drink by adding natural flavors!  Each FlavorFuze Pod comes with two lids.  One is design for drop-in infusing and fits in nearly any wide mouth bottle.  The other is our splash guard style that is sized to fit snugly in wide mouth Hydro Flasks.
See FlavorFuze Pod
HikerPouch Leather Bottle Sling
HikerPouch Leather Bottle Sling
Optional Add-On: HikerPouch Bottle Sling
Carry your Hydro Flask in style!  HikerPouches are designed specifically for larger bottles like 32 and 40 ounce Hydro Flasks.  They come with an adjustable shoulder strap and have a phone pouch on the side.  There's also an extra D-ring on the rim, which makes it easy to snap onto a bag or pouch with a carabiner.
See HikerPouch

Buying a water bottle?
​Keep us in mind!
​See our Amazon store for helpful accessories, like fruit infusers, cup holder adapters, and carrying slings.
See Our Store
See BottlePro's Amazon Store
See BottlePro's Amazon Store
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Are Stanley Mugs Safe? (and What Are Lead-Free Alternatives?)

2/7/2024

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Are Stanley Mugs Safe, and What are Lead-Free Alternatives?

Are Stanley Mugs Safe?

​So it's official, Stanley bottles contain lead.  But what does that really mean?
Here's the cliff-notes summary:
  • A lead-based solder is used in the bottom of Stanley bottles to seal in the vacuum insulation.
  • Realistically this isn't a health risk in most cases.
  • If your bottle is in good condition then you probably don't need to worry.

But if the base of your bottle becomes damaged, then you may want to consider switching it out for a new one.

​Three of the most popular alternative brands that already use a lead-free plug are (click for links to their statements about lead):
  • Hydro Flask
  • Klean Kanteen
  • Owala
Hydro Flask 32oz Original Series
Hydro Flask 32oz Original Series
Great choice for color and lid options, and including one with a stainless steel lid
See Hydro Flask
Klean Kanteen Insulated TKWide Series
Klean Kanteen Insulated TKWide Series
Good all-around bottle with an impact base cap that prevent damaging the vacuum seal if dented.
See Klean Kanteen
Picture
Owala 32oz FreeSip
Ergonomic lid with both a straw & spout.  Unfortunately no options with stainless steel under the lid.
See Owala
​As an Amazon Associate, we earn a small commission if you make a purchase through one of the links.  Thank you for your support!
If that's all the info you were looking for, then I hope this helped, thanks for stopping by, and we hope to see you later!

​But if you'd like to learn a little more about the backstory and ramificiations, then stay tuned because I'll dive into a little more detail and give my thoughts on what's coming next.

Video Review

​We also cover this in a YouTube video if you'd prefer to watch the recap!​

What Happened to Stanley?

This all started when recent viral videos on Tiktok showed lead tests coming back positive in their Stanley bottles.  Eventually, the company had to respond and issued a statement saying essentially that
  • lead is used in the manufacturing process, but
  • that customers won't come in contact with it on the inside or outside as long as their bottle is in good condition.
  • If the bottle does become damaged, you can file a warranty claim.

Stanley's Statement about Lead

Stanley's full statement (as of 2/7/2024) is currently shown at this link and is copied below for easy reference:
"At Stanley, one of the key features of our products is our vacuum insulation technology, which provides consumers with drinkware that keeps beverages at the ideal temperature. Our manufacturing process currently employs the use of an industry standard pellet to seal the vacuum insulation at the base of our products; the sealing material includes some lead. Once sealed, this area is covered with a durable stainless steel layer, making it inaccessible to consumers. Rest assured that no lead is present on the surface of any Stanley product that comes into contact with the consumer nor the contents of the product. In the rare occurrence the base cap of a product comes off due to ordinary use and exposes this seal, it is eligible for our Lifetime Warranty, available here: https://www.stanley1913.com/pages/contact-warranty 

Stanley assures that its products meet all US regulatory requirements including Prop65. Stanley tests for and validates compliance on all products through FDA accredited 3rd party labs that verify our products follow strict guidelines including but not limited to BPA/BPS, PFOS, and phthalate regulatory requirements."
Link to Stanley's Official Statement

Where is the lead in Stanley bottles?

As mentioned, the specific use is in a lead-based solder that seals off the vacuum insulation.  It's located at the base of the bottle in the middle.

​Lead Safe Mama, LLC. has an amazingly detailed breakdown and investigation into all kinds of different bottles, and these are some of her images showing what they look like in other bottles with similar construction.
The lead seal is located below the cover in the center with the Stanley logo
The lead seal is located below the cover in the center with the Stanley logo
What the lead seal looks like in another similar bottle
What the lead seal looks like in another similar bottle
What the lead seal looks like in another similar bottle (under the paint)
What the lead seal looks like in another similar bottle (under the paint)
If you're looking for more information about lead free bottles and containers, or just more information about lead safety in general, I'd highly recommend visiting Lead Safe Mama, LLC's website.  She's been covering this information for years and has a pretty comprehensive review of most major bottle brands.
Lead Safe Mama, LLC Links:
Which Bottle Brands have Lead
What the Lead Seal Looks Like

Stanley's "Nalgene" Moment - Lead & BPAs

​To summarize, lead doesn't contact the inside of the bottle, and it's covered up on the outside so you can't come in contact with it.  So for most people and most situations, this is not a safety concern.  And Stanley's statement also correctly noted that this is an industry standard because most dual wall vacuum insulated bottles you find on the market today use this same type of lead-based seal.
​But the problem for Stanley is that most people won't listen to the finer details or justifications.  Instead, they just see the headlines saying "Stanley bottles contain lead."  This gets shared and creates shockwaves online.
Nalgene Water Bottle
Nalgene Water Bottle
​In many ways, this is Stanley's Nalgene moment.

You know how every single bottle you look at says "BPA-free" somewhere on the packaging?

​That's because of the controversy years ago with Nalgenes and how they contained BPAs, which are compounds found in certain plastics.  The public pressed for change after learning the potential health risks, and eventually when some major retailers stopped carrying any products with BPAs, Nalgene and similar brands switched to BPA-free alternatives like Tritan, which Nalgene, Camelbak, YETI, and many other brands still use today.
How Public Pressure Caused Nalgene to Change their Materials to Avoid BPAs
How Public Pressure Caused Nalgene to Change their Materials to Avoid BPAs
But the damage had already been done, and fallout from the BPA revolution paved the way for alternative brands like Klean Kanteen and Hydro Flask to take significant market share away from Nalgene.

What will Stanley do about Lead?

​Now Stanley is in a similar situation with lead, and they will almost certainly update their manufacturing process to remove lead from the equation.

The good news for Stanley is that this is already being done.  As mentioned, companies like Hydro Flask, Klean Kanteen, and Owala already use a lead-free method to seal in the vacuum, so it shouldn't be difficult for Stanley to adopt similar procedures.

​The problem for Stanley is whether they can do this quickly, transparently, and fairly enough for their loyal customers in a way that won't leave them feeling alientated.  If they can pull this off, then they could maintain their position as social media's favorite bottle brand.  If not, you can bet that other brands will fill the public's new requirement to know their bottles are 100% lead-free.

Will Stanley Let you Exchange Bottles for Lead-Free Ones?

Honestly, I wouldn't be surprised if Stanley offers some kind of bottle swap promotion where customers can trade in their older bottles for a new lead-free version.  Yes, this would be extremely costly, but this kind of move would show their loyal followers that the company stands by them and their products.

Time will tell if they do something like this, but you can almost guarantee that most major brands will switch to lead-free plugs as soon as possible and update their packaging to make sure people know about it.

​In the end, this is a welcome change.  The further we can keep lead from our food and beverages, the better, and this market shift will make many people feel a lot more comfortable with their water bottles that they use every day.

​Buying a water bottle?
​Keep us in mind!

​See our Amazon store for helpful accessories, like fruit infusers, cup holder adapters, and carrying slings.
See Our Store
BottlePro's Amazon Store
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  • Home
  • Learn
    • Comparisons and Insulation Tests
    • Health and Hydration
    • Sip or Skip (Individual Bottles) >
      • Bottles >
        • Camelbak
        • EcoVessel
        • Fjbottle
        • Hydro Flask >
          • Hydro Flask Standard
          • Hydro Flask Trail
          • Hydro Flask Wide
        • Iron Flask
        • Klean Kanteen TKWide
        • Nalgene
        • Owala FreeSip
        • Ozark Trail
        • RevoMax
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        • Takeya
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      • Tumblers >
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