The Red Insole is 7 mm thick (approximately 0.28 inches) with a 3 mm heel rise (approximately 0.12 inches).
The Black Insole is 4mm (approximately 0.16 inches) with a 3 mm heel rise (approximately 0.12 inches).
With every purchase of a pair of Palustria shoes, you will receive one red and one black barefoot insole. You can choose to buy the transitional insole if you are transitioning to barefoot shoes or if you want a bit of extra comfort.
If you wish to use them in other shoes, which are likely narrower than Annika Barefoot shoes, they are easy to trim to size with a good pair of scissors. Please note that they cannot be exchanged once altered.