Superfeet Carbon Insole Size:B(Men's 2.5-4 /Women's 4.5-6) a deep heel cup and

a deep heel cup and roomy toe box

Initial fit should allow the foot to settle naturally into the sandal's foot bed so your foot sits inside the edge of the foot bed all the way around

EU US UK mm 39 6-6

- Responsive durable outsole

Superfeet Carbon Insole Size:B(Men's 2.5-4 /Women's 4.5-6) a deep heel cup andBreakthrough design combines the strength of carbon fiber with ultralight foam to create one of our most innovative, high performance Superfeet insoles ever. Features: DURABLE CONSTRUCTION Superfeet insoles keep their shape, delivering reliable support and comfort for up to 12 months or 500 miles, whichever comes first SUPERFEET SHAPE The low profile shape helps stabilize and support the foot, which can help reduce stress on feet, ankles and knees