Aero Flask

Premium stainless steel flask keeps drinks hot or cold for hours while fitting comfortably in your hand for travel, commuting, or outdoor adventures.

Product Description

The Aero Flask from MiiR has arrived! Built with durable stainless steel that won’t transfer flavor between fluids, the latest addition to MiiR’s barware collection comes in a sleek matte black finish and single wall ergonomic design that fits comfortably in your hand. Sip your spirits in style. Up to 8 ounces in a single fill.

The wide-mouth, stay-open hatchback cap makes refills simple and easy. And you’ll never have to worry about losing the cap –– it’s attached! Focus on finding the vibes, whether that’s in your backyard or the backcountry. The Aero Flask is the perfect on-the-go companion for all your adventures and after-hours aperitifs.

Care

Keep your drinks tasting the way you intended by washing your Aero Flask between uses. Hand wash recommended. Top rack dishwasher safe. Wash before first use. Do not freeze, do not microwave, do not bleach, do not overfill.

CAUTION: This product is single wall, non-insulated. Not intended for use with hot beverages. 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 all orders within 2 business days (M-F) from the date of purchase. Orders placed after 7:00 AM PST will be processed the next business day.

Orders with personalized items take 3-5 business days to be processed.

Exceptions may occur during peak times (holidays, sales, special events, etc). If there is a question regarding your order, we will contact you directly. If you have questions about your order, please contact us at hello@miir.com. 

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.

Aero Flask

Premium stainless steel flask keeps drinks hot or cold for hours while fitting comfortably in your hand for travel, commuting, or outdoor adventures.

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Takeback program

Whether your MiiR is dented, dinged, or your style has changed, recycle responsibly with us and earn a $20 online store credit with Re:Claimed Takeback. We make it easy: send us your used MiiR, we’ll sort and recycle it, and you receive store credit.
Takeback Program
$20 credit on future purchases

Free Shipping

MiiR offers free standard ground shipping within the contiguous United States for orders $75 and over after discounts, before taxes. Standard ground orders under $75 are subject to a flat rate shipping fee of $9.95 USD.
Free Shipping
For US Ground on orders over $75

Lifetime Guarantee

Every MiiR product comes with a lifetime warranty. Should it ever fail, we’ll provide a replacement and recycle the original, so your favorite product stays in action for years to come.
Lifetime Guarantee
reduces waste on the planet
Certified B Corporation
The Climate Label
1% For the Planet Member
Certified Evergreen
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Product Description

The Aero Flask from MiiR has arrived! Built with durable stainless steel that won’t transfer flavor between fluids, the latest addition to MiiR’s barware collection comes in a sleek matte black finish and single wall ergonomic design that fits comfortably in your hand. Sip your spirits in style. Up to 8 ounces in a single fill.

The wide-mouth, stay-open hatchback cap makes refills simple and easy. And you’ll never have to worry about losing the cap –– it’s attached! Focus on finding the vibes, whether that’s in your backyard or the backcountry. The Aero Flask is the perfect on-the-go companion for all your adventures and after-hours aperitifs.

Care

Keep your drinks tasting the way you intended by washing your Aero Flask between uses. Hand wash recommended. Top rack dishwasher safe. Wash before first use. Do not freeze, do not microwave, do not bleach, do not overfill.

CAUTION: This product is single wall, non-insulated. Not intended for use with hot beverages. 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 all orders within 2 business days (M-F) from the date of purchase. Orders placed after 7:00 AM PST will be processed the next business day.

Orders with personalized items take 3-5 business days to be processed.

Exceptions may occur during peak times (holidays, sales, special events, etc). If there is a question regarding your order, we will contact you directly. If you have questions about your order, please contact us at hello@miir.com. 

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.

MiiR - Design forward. Generosity driven.

$5.2M Given
120 Nonprofits
26 Countries
With design, generosity and sustainability at our core, MiiR adamantly and actively contributes to the prosperity of people and planet. Each year, we invest a portion of top-line revenue in nonprofit organizations whose work empowers communities while benefiting the health of our natural environments.

Hatchback Cap

The Aero Flask features a custom “stay-open” attached hatchback cap design that only closes when you want to. No more unscrewing your cap every other minute. And with its attached design, you’ll never have to worry about losing it.

Ergonomic Design

Built with an ergonomic design, the Aero Flask is crafted with a sleek design that more naturally fits in your hand. With ease of comfort, you only have to worry about crafting the perfect flask cocktail.

Wide Mouth

The Aero Flask’s wide mouth opening is all about convenience — fill up or empty out your flask faster than ever, and without a funnel.