I have very flat feet
"I have very flat feet and tried these on a whim & so glad I did. I Love my Aerothotics!! This is my second pair."

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.
Don't settle for a sandal that only gives you one of comfort, style, or support when Seraph delivers all three at a genuinely affordable price. The craftsmanship behind this cushioned sole is built to empower your feet through everyday hustles, not just look nice standing still. Two adjustable straps come with a cute metallic buckle for a fit that's actually yours, a heel cup and raised toe bar promote real stability, and the braided strap adds visual appeal while a cork sole gives you the strength to walk without hesitation. Breathable, soft dual synthetic straps make Seraph a solid choice for high arches, and a geometrical patterned outsole boosts traction so you can confidently explore cities, malls, or wherever the day takes you. Seraph is APMA Accepted, backed by real credibility, and fits true to size in whole sizes. Order your usual size here. Half sizes and wider feet should round up rather than down (a 7.5 becomes an 8). Medium width. The Size Chart has the exact numbers if you'd like to confirm.
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: 5.0 / 5 from 11 reviews.
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"I have very flat feet and tried these on a whim & so glad I did. I Love my Aerothotics!! This is my second pair."
"Very comfortable!"
"Very comfortable!"
"I’ve tried other sandals, but these are the best for my metatarsal support. My friend suggested them, and they’ve been perfect for relieving pressure on the balls of my feet."
"They are so comfortable!! I love them!!"
"Love. . . love. . . love!"
"I have really sweaty feet especially in summer I always have trouble finding sandals. These are absolutely sweat resistant I wore them on a really hot day and they were comfortable and held up well. Highly recommend for all you sweaty feet people like me"
"Love Love these shoes!! Comfy from the moment your foot slips into them !! Great for a summer sandal when I can’t wear my orthotics. Stylish and loved the variety of choices !! Superseded my expectations!"
"The 9 was 39 in Europe size which was too small. In sandels I always wear 9 so I hope the 10 isn’t too big."
"These shoe are AWESOME!!! Most comfortable shoes I have ever worn hands down. Supportive with the perfect shape and metatarsal pads are just right. Please please make a wones size 12. I am squeezing onto an 11 but still worth it for the comfort."