Leather barefoot shoes from the German brand Ricosta are light, flexible and meet all barefoot criteria. The rubber sole is beautifully soft and the heel is not reinforced. They come with a removable insole.
They are only suitable for narrow feet, narrow heel and narrow ankle.
Material:
upper - leather
lining - leather
sole - rubber
Internal length in mm (measured with Plus 12 gauge) and width in mm (measured with Clevermess gauge):
21: 136 / 56
22: 144 / 57
23: 149 / 60
24: 157 / 61
25: 164 / 62
26: 170 / 63
Measured with an insole.