This Is Alter Ego
It’s not just how you train, it’s how you live. Active lives and real moments.
Built Better. Looks Better.

Performance
Premium performance headwear born from running so you feel lighter, freer, and ready to move. Stay comfortable in any condition and keep moving strong.

Quality
Durability you can count on. No sagging or fading, just headwear that keeps you confident and focused on feeling your best every day.

Endurance
Built to elevate your performance and your day the moment it goes on. Light, sharp comfort that lifts every movement and motivates you to keep going.

Style
Clean, versatile headwear that helps you feel good wherever you go. Look sharp on the run, feel confident through the day, and live your alter ego.
Size Guide
| Size | Hat Size | Inches | CM |
|---|---|---|---|
| SMALL | 6 ½ - 7 ⅛ | 20.5" - 22.4" | 52cm - 57cm |
| STANDARD | 6 ⅞ - 7 ½ | 21.7" - 23.6" | 55cm - 60cm |
| X-LARGE | 7 ⅛ - 7 ⅞ | 22.4" - 24.8" | 57cm - 63cm |
How to measure
To choose the right size, follow the steps below:
Use a measuring tape for maximum
accuracy (flexible tape, if possible).
Measure where the hat will sit, with
the tape snug but not too tight.
Measure on bare skin or over your
hair, similar to how the hat is worn.
Match your measurement to the
closest size on our chart.
Size Guide
| Size | chest | waist | ||
|---|---|---|---|---|
| XS (0-2) | 31-34" | 79-86 cm | 25-27" | 64-69 cm |
| S (4-6) | 34-37" | 86-94 cm | 28-30" | 71-76 cm |
| M (8-10) | 38-41" | 97-104 cm | 31-33" | 79-84 cm |
| L (12-14) | 42-45" | 107-114 cm | 34-36" | 86-91 cm |
| XL (16-18) | 46-49" | 117-124 cm | 37-39" | 94-99 cm |
| XXL (20-22) | 50-53" | 127-135 cm | 40-42" | 102-107 cm |
How to measure
To choose the right size, follow the steps below:
Use a measuring tape for maximum accuracy (flexible tape, if possible).
Measure your chest
Wrap the measuring tape around the fullest part of your chest, just under the arms and across the shoulder blades. Keep it horizontal and snug, but not tight.
Measure your waist
Find the narrowest part of your torso, just above the belly button. Wrap the tape around your waist comfortably, leaving space for one finger.
Compare your chest and waist measurements to those on our size chart, and select the size that most closely matches your measurements for the best fit.
Size Guide
| Size | hips | waist | ||
|---|---|---|---|---|
| XS (0-2) | 34-36" | 86-91 cm | 24-26" | 24-26" |
| S (4-6) | 36-38" | 91-97 cm | 28-30" | 71-76 cm |
| M (8-10) | 38-40" | 97-102 cm | 30-32" | 76-81 cm |
| L (12-14) | 40-42" | 102-107 cm | 34-36" | 86-91 cm |
| XL (16-18) | 42-44" | 107-112 cm | 38-40" | 97-102 cm |
| XXL (20-22) | 44-46" | 112-117 cm | 40-42" | 102-107 cm |
How to measure
To choose the right size, follow the steps below:
Use a measuring tape for maximum accuracy (flexible tape, if possible).
Measure your hips
Stand with your feet together and wrap the tape around the fullest part of your hips, keeping it level and snug but not tight.
Measure your waist
Measure your waist at the narrowest part, usually just above the belly button. Wrap the tape snugly around your waist, leaving a finger's width for comfort.
Compare your hips and waist measurements to those on our size chart, and select the size that most closely matches your measurements for the best fit.
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Finding products you'll love...
I was waiting for Alter ego to come up with a high ponytail hat and it does not disappoint! I love the options for high ponytail or bun or low. Whether running/ exercising or running errands it’s my new go to hat!
I love having my cute high pony in this hat! It is also comfortable on my runs! Love it, make it in black so I can have my salt stains looks so fancy and hardcore. :)
I love all my Alter Ego hats but this one is a complete game changer. I love that I can do my hair any way that I want. I can also have a cute high ponytail with this hat on the days that my pony looks good but my hair is dirty. It fits perfectly like all the other trotters hats I have with option of doing a low bun or high pony.
Ordered the small which fit well around the circumference of my head but the “low crown” was still way too deep for me. Made my ears stick way out and was still sooo tall. Unfortunately when I tried it on a little makeup got on it so now I am stuck with a hat I won’t wear. I am really disappointed. I was really hoping to find a hat that fits properly, especially at this price point.
Frequently Asked Questions
Most hats are adjustable and designed to fit a variety of head sizes. The adjustable closures ensure a secure fit for different head shapes and hair types.
It’s best to hand-wash your hat to preserve its shape and materials. Avoid using a washing machine to maintain its quality.
Absolutely. Whether you’re running, golfing, or simply cheering for your team, our hats are built with the best performance fabrics and adjustable fits that keep up with your most active days.
Yes. Every hat in the collection is designed to look great and perform well for everyone. With versatile styling and adjustable fits, these hats are truly unisex.
They do. All Alter Ego hats feature adjustable snapbacks for a custom fit, and we also offer Small and X-Large sizes with different circumferences and crown depths. This ensures comfort and performance no matter your head shape or size.