Father’s Day 2026 Flask

Cheers to the man who made the memories. The Father's Day Aero Flask pairs a heritage patch design with a comfortable single-hand grip — built for dads with a rugged spirit and a life well lived.

Part of our 2026 limited-edition Mother's and Father's Day custom designs.

Product Description

Cheers dad with the Father’s Day Aero Flask. Heritage patch design celebrates his rugged spirit. Flask comfortably fits in one hand for easy drinking.

Built with durable stainless steel that preserves each spirits’ flavors, the premium Father’s Day Aero Flask keeps 8oz of drinks hot or cold for hours. With its sleek matte black finish and single wall ergonomic design, dad will sip with swagger.

The wide-mouth, stay-open hatchback cap makes refills simple and easy. No more worrying about losing the cap –– it’s attached! Focus on finding the vibes, whether that’s in the backyard or the backcountry. The Father’s Day Aero Flask is the perfect on-the-go companion for adventures near and far.

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.

Father’s Day 2026 Flask

Cheers to the man who made the memories. The Father's Day Aero Flask pairs a heritage patch design with a comfortable single-hand grip — built for dads with a rugged spirit and a life well lived.

Part of our 2026 limited-edition Mother's and Father's Day custom designs.

Upload a custom design

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.
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Product Description

Cheers dad with the Father’s Day Aero Flask. Heritage patch design celebrates his rugged spirit. Flask comfortably fits in one hand for easy drinking.

Built with durable stainless steel that preserves each spirits’ flavors, the premium Father’s Day Aero Flask keeps 8oz of drinks hot or cold for hours. With its sleek matte black finish and single wall ergonomic design, dad will sip with swagger.

The wide-mouth, stay-open hatchback cap makes refills simple and easy. No more worrying about losing the cap –– it’s attached! Focus on finding the vibes, whether that’s in the backyard or the backcountry. The Father’s Day Aero Flask is the perfect on-the-go companion for adventures near and far.

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.

$5.6M Given
150+ Nonprofits
5 Continents
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.