For best results, remove your current insoles, measure them, and compare those measurements to the inches/centimeters listed below for each size. Because footwear sizes vary widely across brands, many AURORRA By ARRIS customers choose to size down after measuring. You can trim the insole, but that's not our intention.
Also, insoles are approximately 5.5mm thick (+0.50/-0.50 mm).

Note: The letters listed below will be a marking on the actual insole foam.
Size A
- US Men: 5 - 5.5 / Women: 6.5 - 7
- Length: 9.79 inches / 24.87 cm
Size B
- US Men: 6 - 6.5 / Women: 7.5 - 8
- Length: 10.12 inches / 25.71 cm
Size C
- US Men: 7 - 7.5 / Women: 8.5 - 9
- Length: 10.47 inches / 26.59 cm
Size D
- US Men: 8 - 8.5 / Women: 9.5 - 10
- Length: 10.79 inches / 27.40 cm
Size E
- US Men: 9 - 9.5 / Women's: 10.5 - 11
- Length: 11.13 inches / 28.27 cm
Size F
- US Men: 10 - 10.5 / Women: 11.5 - 12
- Length: 11.46 inches / 29.12 cm
Size G
- US Men: 11 - 11.5 / Women: 12.5 - 13
- Length: 11.80 inches / 29.96 cm
Size H
- US Men: 12 - 12.5 / Women: 13.5 - 14
- Length: 12.13 inches / 30.80 cm