I LOVE my Aerothotics! I
"I LOVE my Aerothotics! I probably have 30 different pairs of flip flop sandals in my closet and I continually go back to these shoes. I literally"

Selecting the perfect shoe size may sometimes seem to be confusing; this can be due to the many conversions between women's and men's sizes or understanding different measurement systems such as European shoe size. Many people search online prior to making a purchase because many different regions have different systems for defining their shoe sizes.
For the purpose of this guide, we will clarify the conversion from size 9 to all other size conversions, as it happens to be one of the most commonly searched for shoe sizes on the internet, so all of the conversion formulas above would also apply to other shoe sizes as well. Therefore, once you understand how each formula/conversion works, you can then apply them to any shoe size with confidence.
Meet the Ostrya (L0336), where ultimate comfort meets effortless style. Featuring a sleek, wide, plush vegan leather glossy strap that wraps elegantly around the foot, the Ostrya sandal adds a refined edge to any casual look. Its modern silhouette and versatile design make it perfect for pairing with any ensemble. Enhanced by a contoured footbed and shock-absorbing sole, this slide ensures all-day comfort without compromising elegance.
Choosing Your Size
Order your usual sandal size for the best fit.
Half Sizes or Wide Width
If you wear a half size or have wider feet, size up to the next full size. Ex: If you’re a 7.5, we recommend ordering an 8.
Fit Notes
Ships within 24 hrs from Austin, TX
Enjoy 30 days of comfort—love them or exchange free.
Try a pair risk-free for 30 days
Safe, encrypted payments every time
Trusted by foot health experts, Aerothotic sandals carry the APMA Seal of Acceptance — so you know they’re not just comfy, they’re good for your feet.
Yes, order your usual sandal size. If you’re between sizes or have wider feet, we recommend sizing up.
The fit is a medium width, but the cushioned design adapts to most foot shapes. If you’re in between, size up for a more relaxed fit.
Yes! Our sandals are made with water-friendly materials that dry quickly and won’t lose shape.
Many of our customers find relief from everyday foot pain thanks to the arch support, cushioned heel cup, and shock-absorbing footbed.
No worries — you’re covered by our 30-Day Comfort Promise. Try them out, and if they’re not right for you, exchanges are free and easy.
Overall rating: 4.5333333 / 5 from 30 reviews.
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"I LOVE my Aerothotics! I probably have 30 different pairs of flip flop sandals in my closet and I continually go back to these shoes. I literally"
"I have plantar / heel inflammation and these were comfortable for work!"
"Love them, fit was great and arch support outstanding"
"I finally found a sandal that I can wear comfortably and they are super cute. Love, love, love them. I got two other colors as wwll."
"Love the shoes. This is my 4th pair. So comfortable and stylish."
"I put them on when I took them out of the box and I have lived in them every since. Very comfortable, A nice sturdy sandal."
"I am an aerobatic sandal person !! Yeah !! Coupon appreciated !!"
"Nice and comfortable"
"well constructed sandal sturdy enough for daily wear; attractive & economical"
"Odd fit and not as comfortable as another style I ordered. I am a 7.5 but was recommended to order an 8 as only offer whole sizes. Is a little too long and the footbed is stiff. I also don’t like the ridges around the toes. I did not try to exchange as I suspect the 7 would be too short. They are cute on, just not very cushioned"