No it has been 100% leak proof! Mine worked great for a while on my hydroflask. Then the lid broke in half and I can't get the broken part off my water bottle making my hydroflask unusable. Now I have to purchase new bottle... not super happy about that.

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The Coldest Water

Q: Does it fit a hydroflask 25 oz wine bottle?

I just happened to have the wine hydro flask. I never thought to try. I immediately pulled it out tried it. It dies fit. Thank you for asking so now I know I can sip 25 oz of wine to my hearts content. :)

Q: Does anyone have a hard time sipping? I feel like the air vent doesn't work in the lid

Yes, they messed up on this design. There is a little vent behind the spout. The first version allowed air to pass through. This new version is completely sealed. If u puncture it, you will sip fine, but it can leak if tipped over. The people who say to loosen the cap are just making air to pass through the lid. If they flip the bottle upside down, it will leak from the lid

Q: Will this fit a 25 oz s'well bottle?

No, it will not fit a swell bottle

Product ID: 73179876

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Details

Material
Plastic
Color
Black
Brand
The Coldest
Finish Type
Polished
Product Dimensions
2"D x 4"W x

💧Optimized 2.0 Flow Rate for smooth hydration

🧼Includes Straw Cleaner for effortless maintenance

❄️Super Insulated Lid for ultimate temperature control

Frequently Bought Together

COLDEST Insulated Straw Cap Flip Top Lid - Multi-Compatible with Flask Mouth - Black Standard (for 12/21 Gallon Lids)

Coldest Insulated Water Bottle with Handle Lid | Leak Proof, Simple Insulated Modern Stainless Steel, Double Walled, Sport Thermos Bottles, Metal Flask | 21oz

The Coldest Water Bottle Brush - Long Handle 3 in 1 Cleaning Kit for Stainless Steel Water Bottles, Lids, Straws. Tumblers, Coffee Mugs & Baby Bottles - Perfect Cleaner for Narrow Neck Bottles

Description

❄️ Flip the Lid, Fuel Your Grind

CLEAN LIKE A PRO - Comes with a dedicated straw cleaner to reach every nook, ensuring fresh, hygienic sips every time.
FLIP SIP REPEAT - One-finger flip top lid for effortless access—because your hydration should be as fast as your hustle.
COMFORT MEETS CONVENIENCE - Soft silicone mouthpiece protects your teeth and offers a smooth drinking experience, even on the go.
STAY FROSTY STAY FOCUSED - Super insulated design keeps your drink cold longer, perfect for high-performance athletes and outdoor pros.
HYDRATE AT THE SPEED OF LIFE - New 2.0 lid design delivers the best suction and flow rate, so you never miss a beat during your workout.

The COLDEST Insulated Straw Cap Flip Top Lid is a polished black, multi-compatible lid designed for 12/21 gallon flasks. Engineered with super insulation, it maintains your drink’s temperature longer while featuring an upgraded 2.0 flow system for optimal suction. The soft silicone mouthpiece ensures comfort and safety, and the included straw cleaner makes maintenance a breeze. Perfect for athletes and outdoor enthusiasts who demand performance and convenience in every sip.

Specifications

Finish Types	Polished
Material	Plastic
Item Dimensions D x W x H	2"D x 4"W x 10"H
Shape	Round
Color	Black

Have a Question? See What Others Asked

Does it leak?

Does it fit a hydroflask 25 oz wine bottle?

Does anyone have a hard time sipping? I feel like the air vent doesn't work in the lid

Will this fit a 25 oz s'well bottle?

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129.47 DT

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