2 best hydro flask flat caps

Hydro Flask flat caps are accessories designed for Hydro Flask water bottles. Hydro Flask is a well-known brand that specializes in insulated water bottles, known for their durability, quality, and ability to keep drinks cold or hot for extended periods.

The flat cap is one of the lid options available for Hydro Flask bottles. Unlike the standard lid, which typically has a loop for carrying or attaching to a backpack, the flat cap is more compact and easier to handle. It features a flat, easy-to-grip design that allows for convenient drinking and pouring.

The flat cap usually has a simple flip-top opening, making it easy to access the contents of the bottle without having to unscrew the lid.This feature is especially convenient during activities like hiking, running, or working out when you need quick access to hydration.

It's important to note that Hydro Flask offers a variety of caps and lids to suit different preferences and activities. Some caps are designed for sipping, while others are intended for wider-mouth access. The flat cap is a popular choice for those seeking a practical and easy-to-use option for their Hydro Flask water bottle during various sports, fitness, or outdoor activities.

Below you can find our editor's choice of the best hydro flask flat caps on the market

Hydro Flask Wide Mouth Flat Cap

Hydro Flask

Based on 519 reviews Check latest price

Product description

Hydro Flask's insulated water bottles are made of high quality food grade 18/8 stainless steel. The bottles have no liner (like most aluminum bottles) and are BPA free. Unlike plastic water bottles or single wall stainless bottles, Hydro Flask will keep your beverage of choice at your preferred temperature for hours, whether you choose hot, cold or room temperature liquids. All Hydro Flask products feature a lifetime warranty and are double wall vacuum insulated. They are designed to be lightweight, making them great for long hikes, days on the beach, hot yoga classes, golf, long road trips or everyday office use. Even when filled with ice, the exterior of your Hydro Flask will never leave a puddle on your desk, drip on your shirt, or sweat in your bag.

Hydro Flasks Wide Mouth Flat Cap for Hydro Flasks Wide Mouth water bottles.
Replacement cap compatible with both 18oz, 40oz and 64oz Wide Mouth bottles.
Made from polypropylene (PP#5) which means they are BPA-Free
The Lifetime Warranty makes Hydro Flasks the best water bottles
Please note that the Flat Cap does not fit on the older style Wide Mouth flasks. Only compatible with Hydro Flask Bottles.

User questions & answers

Question:	Will this lid fit a 32oz takeya bottle
Answer:	Not sure, I only had to replace my lid that was cracked on my Hydro Flask. Sorry.
Question:	I lost the O-ring and I just want to make sure that this has one on the inside of the cap to prevent leaks/droplets. Will fit 32oz
Answer:	Not sure with 32oz. Im using the 40oz and it fits perfect. It says replacement cap compatible with both 18oz, 40oz and 64oz Wide Mouth bottles.
Question:	Will this fit on the 32 0z. model? The description doesn't list it, but hoping maybe it's a mistake
Answer:	Yes, I believe the 32oz, 40oz & 64oz Hydro Flask models all have the same sized mouth openings & fit the same caps
Question:	Will this fit the 12oz bottle
Answer:	Hello Mary Jane - Shannon from Tall Ridge here - Thank you for your inquiry! The Hydro Flask Wide Mouth Flat Cap will not fit the 12 oz as it is a Standard Mouth flask and the cap you chose is for Wide Mouth only. The caps that go with the Standard Mouth are the Standard Mouth Flat Cap, Standard Mouth Loop Cap, and the Standard Mouth Insulated Sport Cap.

Hydro Flask 24 oz. Standard Water Bottle

Hydro Flask

Based on 630 reviews Check latest price

Product description

The Hydro Flask Standard Mouth Flex Cap is the ideal combination of strength and flexibility. Designed for ultimate portability, we crafted every detail with easy-carry comfort in mind and insulated it too, so you can go further, for longer, keeping your favorite beverage comfortably by your side. Compatible with all Standard Mouth Hydro Flask Water Bottles, the Hydro Flask lid features Honeycomb insulation to help keep cold drinks cold and hot drinks hot. Whether you’re out in nature or stuck in the office, it’s always a good idea to have an extra water bottle lid for your Hydro Flask. Maintain the temperature of your contents longer, so you can stay busy and get more done. An insulated water bottle cap to match your insulated water bottle. This Hydro Flask product is backed by a manufacturer's lifetime warranty.

Newly produced Hydro Flasks do not feature a registered trademark symbol next to the logo
Honeycomb Insulation helps keep cold drinks cold and hot drinks hot
BPA-free and phthalate-free
Compatible with all Standard Mouth Hydro Flask bottles
Lifetime Warranty

User questions & answers

Question:	Will it cover 24 oz Hydroflasks
Answer:	Yes
Question:	What is the size of the bottle opening? I have an older hydro flask and it's opening is smaller than my other two
Answer:	I'm not sure of the exact dimensions but this fits the larger opening. I also have an older hydro and a newer one and it fits the newer.
Question:	DO you sell the wide mouth size
Answer:	Sorry , I only have the standard size
Question:	Does this lid work for 40 oz hydro
Answer:	Depends on the bottle you have. Cause there are wide mouths and standard mouth. I purchased a wide mouth for my husbands 64 . I have a 40 oz and i purchased a wide mouth. Idk, if that helps you.
Question:	Does the olive color have a wide mouth option
Answer:	Hi Vivian - Wendy from Tall Ridge here - Thank you for your inquiry! Yes, the colored Flex Lids come in both sizes in all four colors. Just click on the 'select' dropdown menu below the color boxes and select Wide Mouth. I hope that helps!
Question:	Does the olive color come in a wide mouth size.... it does
Answer:	Hi - Wendy from Tall Ridge here - Thank you for your inquiry! Yes, there are Olive lids for both the Standard Mouth and the Wide Mouth bottles. If you click on the listing you will find a dropdown list located underneath the color options. Click that "select arrow' and select Wide Mouth. I hope that helps you!
Question:	Will this lid fit an 18 ounce (532ml) wide mouth Hydraflask
Answer:	Yes, it will fit the wide mouth
Question:	Will this fit the 40 oz
Answer:	No, the 40 oz. is a WIDE mouth. This one is the STANDARD SIZE. YOU MIGHT WANT THE WFC2 - Wide Mouth Flat Cap with ring which does fit the 40oz.
Question:	Will this fit the 24 oz standard mouth flask
Answer:	It fits standard mouth, not narrow mouth. Just make sure your bottle is STANDARD MOUTH, not narrow mouth, Hydroflask, because on amazon all I see are narrow mouths for 24 oz.
Question:	Does this lid push on snugly OR is it a screw on? If the latter, how many turns does it take to close it fully
Answer:	It's a screw on and needs a couple of turns to close it fully. Closes tightly. Haven't had any spills.