US M | US W | EURO | UK | AUS | JAPAN | CHINA |
4 | 5.5 | 35.5 | 3 | 4 | 21.5 | 36 |
4.5 | 6 | 36 | 3.5 | 4.5 | 22 | 37 |
5 | 6.5 | 37 | 4 | 5 | 22.5 | 38 |
5.5 | 7 | 37.5 | 5 | 5.5 | 23 | 39 |
6 | 7.5 | 38 | 5.5 | 6 | 23.5 | 39.5 |
6.5 | 8 | 38.5 | 6 | 6.5 | 24 | 40 |
7 | 8.5 | 39 | 6.5 | 7 | 24.5 | 41 |
7.5 | 9 | 40 | 7 | 7.5 | 25 | 41.5 |
8 | 9.5 | 41 | 7.5 | 8 | 25.5 | 42 |
8.5 | 10 | 42 | 8 | 8.5 | 26 | 43 |
9 | 10.5 | 43 | 8.5 | 9 | 27 | 43.5 |
9.5 | 11 | 43.25 | 8.75 | 9.5 | 27.25 | 44 |
10 | 11.5 | 43.5 | 9 | 10 | 27.5 | 44.5 |
10.5 | 12 | 44 | 10 | 10.5 | 28 | 45 |
11 | 44.5 | 10.5 | 11 | 28.5 | 46 | |
11.5 | 45 | 11 | 11.5 | 29 | 46.5 | |
12 | 46 | 11.5 | 12 | 29.5 | 47 | |
12.5 | 46.5 | 12 | 12 | 30.5 | 48 |
PRODUCT DETAILS
Product Description:
Features & Benefits:
- L820 - orthotics for low arches to flat feet with no forefoot pain, featuring a posted heel to control over-pronation and provide balance.
- Top Cover Material: Ultra soft mesh polyester fabric to maximize air flow and reduce moisture
- Center Cushioning Material: FitGuard™ to cushion every stride with slow recovery memory foam
- Performance Base: Aerocell™ polyurethane for high energy return
- Insole Thickness: .2165"
- Recommended for: Gym Workouts, Training Sessions
- Best for: Gym sneakers, Training shoes, Athletic sneakers, Tennis shoes
- SKU L820M
SIZE GUIDE
HEEL-TOE MEASUREMENT | 8.7" | 8.8" | 9.0" | 9.2" | 9.3" | 9.5" | 9.7" | 9.8" | 10.0" | 10.2" | 10.4" | 10.5" | 10.7" | 10.8" | 11.0" | 11.2" | 11.3" | 11.5" | 11.7" | 11.9" | 12.0" |
WOMEN'S - US | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | -- | -- | -- | -- | -- | -- |
WOMEN'S - EU | 35 | 35 | 36 | 36 | 37 | 38 | 38 | 39 | 40 | 40 | 41 | 41 | 42 | 43 | 43 | -- | -- | -- | -- | -- | -- |
MEN'S - US | -- | -- | -- | -- | -- | -- | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 13.5 | 14 |
MEN'S - EU | -- | -- | -- | -- | -- | -- | 39.5 | 40 | 41 | 41.5 | 42 | 42.5 | 43 | 44 | 44.5 | 45 | 46 | 46.5 | 47 | 48 | 49 |
Make sure you are standing, wearing the socks or stockings you will wear with your new shoes. Using one of the following charts, convert your U.S. shoe size to EU.
IN BETWEEN SIZES?
Aetrex recommends you size up for both footwear & orthotics.
CUSTOMER RATINGS & REVIEWS
- Reviews
- Questions

Life changers for your feet
These were recommended by the sales rep to put in my running shoes and have been amazing. They are very comfortable and work with flat feet. I purchase three more pairs to work in multiple shoes. So much better than custom orthotics.

Great and used for shin splints
I was training for the Boston marathon and had some serious shin splints late in the training as I started to ramp up to the longer distances. Marathon sports recommend I switch to Mizuno wave horizons and replace the insoles with these. I did the rest of my training running on the grass where I could, and I have not had shin splints since. I attribute this to all the changes, including the insoles. They are very comfortable, you replace those that come with the shoes, and they just provide better support.