Leakproof Straw Lid

Regular price $9.95
Regular price Sale price $9.95
Sale Sold out
38 reviews

Leakproof Straw Lid

Regular price $9.95
Regular price Sale price $9.95
Sale Sold out
38 reviews
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Orders over $75 ship free!
(U.S. standard ground only)


Product Description

The insulated MiiR Leakproof Straw Lid guarantees no leaks, even at high altitude. Includes 2 cut-to-fit straws and fits all MiiR Wide Mouth Bottles, Flip Travelers and 360 Travelers. Not intended for use with hot or carbonated beverages. 

Straw Trim Lengths

Lengths below are for all MiiR Wide Mouth Bottles and Travel Tumblers 

  • 12oz: 4.9in/125mm  (including kid's bottles)
  • 16oz: 6.38in/162mm  
  • 20oz: 7.75in/197mm  
  • 32oz: 8.42in/214mm  
  • 42oz: Do Not Trim


Wash before first use. Hand wash recommended. Lid top rack dishwasher safe. Do not freeze, do not microwave, do not bleach, do not overfill.

CAUTION: Choking hazard. May contain small parts not suitable for children under 3 years.

Shipping & Returns

Do I have to pay for shipping?

MiiR offers free standard ground shipping within the contiguous United States for orders $75 and over. Standard ground orders under $75 are subject to a flat rate shipping fee of $9.95 USD. Expedited and international rates, if applicable, will be calculated in the checkout once you have entered your shipping address.  A shipping charge will be applied to your final order in all other scenarios.

When will my order ship?

We do our best to ship your order within 1-2 business day of purchase, M-F. Exceptions may occur if there is a question regarding your order, in which case we will contact you directly.  If you have questions about your order, please contact at hello@miir.com.

MiiR uses FedEx on all shipments within the contiguous United States unless an expedited option is selected by the customer.

2-Day and Overnight orders should be placed by 11:00 AM PST for quickest delivery. Expedited orders placed after 11:00 AM PST will require an additional business day for processing. This excludes weekends and holidays. All "Delivery by" dates are estimates and not guaranteed. 

Shipping to Hawaii 

Shipments to Hawaii will be automatically upgraded to a 2-day delivery service. Furthermore, please note that shipping remains free for orders over $75.


The insulated MiiR Leakproof Straw Lid guarantees no leaks, even at high altitude.

Design Forward

Easy 2-part assembly (lid + removable straw). BPA free.

Generosity Driven

Every MiiR product sold helps fund nonprofit organizations that work to empower communities, while investing in the health of our natural environments.

Customer Reviews
4.7 Based on 38 Reviews
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Michael SVG verified by SHOP
United States

Works great, but just make sure you remember to open it slowly if you put carbonated or hot liquids inside.

Justin SVG verified by SHOP
United States United States

I love the clean crisp design and looks perfect. Oddly incentivizes me to drink more! The color is ever so slightly off from the body but I’m splitting hairs.

Patrice SVG verified by SHOP
United States United States

Love the straw lid! Perfect for when working out…

Patrick b.
United States United States

This lid sucks in more ways than one :((

My first two months with this lid were great. I was giving a straw bottle from my job. I was happy that the lid was totally spill proof. After about month three I started to hear something shaking around in the lid. I confused at first I later understood it to be water that has made its way inside the straw lid itself. I found this out one day by shaking the lid that was completely dry on the outside. Upon shaking it water began to expel itself from the vent hole on the underside of the lid. I am now very hesitant to use this lid as I know a dark damp place is a mold and bacteria playground and with no way to disassemble and clean the inside. I feel the only correct move is to retire this lid and either buy a different lid or share the standard lid from my other 20 ounce miir bottle. You can kinda see in the photo after shaking the lid vigorously where the water is leaking from the seams of the lid.

MiiR Leakproof Straw Lid ReviewMiiR Leakproof Straw Lid Review
United States United States

Nearly perfect

Love the handle and flip sippy. It is perfectly leakproof, so when we were running with luggage to the train with a kid in tow, we had no worries. Didn't even bother with the straw for the inside, which means less to clean and keep track of. This is great for cold drinks, but it would be scalding for hot drinks, so that is the only limitation. We use the 360 lid for that.