Women's Underhoodie
ARE YOU SURE?!
| Men's Workout Vest | CHEST (IN) | STOMACH (IN) |
| S | 32"-37" | 28"-33" |
| M | 37"-41" | 33"-37" |
| L | 41"-44" | 37"-40" |
| XL | 44"-48" | 41"-44" |
| XXL | 48"-52" | 44"-46" |
| XXXL | 52"-56" | 46"-48" |
| Women's CROP Workout & Split Vest | CHEST (IN) |
| XS | 28"-32" |
| S | 32"-36" |
| M | 36"-40" |
| L | 40"-44" |
| Women's Workout & Split Vest | CHEST (IN) | STOMACH (IN) |
| XS | 28"-32" | 23"-25" |
| S | 32"-36" | 25"-27" |
| M | 36"-40" | 27"-29" |
| L | 40"-44" | 29"-31" |
Thanks for choosing our Women's Underhoodie! To ensure the perfect fit, please check the sizing charts above or go to our sizing guide page. If you have already done so, please proceed by clicking "Continue." We want your workout experience to be just right—your satisfaction is our priority!
Discount available for Military, First Responders, Medical Workers and Teachers (GovxID elegible)
What is GovX ID?
Sizing Guide
Women’s Underhoodie
How to Measure- Chest: Measure around the fullest part of your bust, just under the armpit, keeping the tape horizontal.
- Stomach: Measure 2 inches above the navel around the stomach, ensuring the tape stays horizontal.
| Women's Underhoodie | CHEST (IN) | STOMACH (IN) |
| XS | 32"-33" | 25"-27" |
| S | 33"-36" | 27"-29" |
| M | 36"-38" | 29"-31" |
| L | 38"-41" | 31"-34" |
Sizing Preference
To ensure a secure and proper fit, visit our sizing guide page.
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Embrace the mindset and create lasting change in your mind, body, and spirit.
Every Aion product is designed with your complete health and wellness in mind. We’re your guide on a transformational journey—that never-ending quest to unlock your true potential by pushing yourself physically and mentally.
One hoodie. Many moments.
In the gym
On the run
Everywhere
Aion Product FAQs
Learn more about our products, design, and technology.
Can the women's underhoodie be worn while exercising?
It can be worn under a Performance Vest or on its own to exercise.
How does Aion give back?
For each of the first 20,000 Aion vests sold, we’ll donate $20 to a small group of nonprofits that are focused on enriching people’s minds, bodies, and spirits. That includes $10 from your purchase and $10 in matching funds from founder Brent Yates’ organization, Restore Us.
Where can I buy Aion gear?
Aion offers products exclusively through our website. We’re building a thriving community (online and IRL) based on our shared mindset and our focus on achieving greatness.
