Aetrex UK to US size chart:

Seize the summer day in the Sydney! This espadrille wedge is perfect for those who want a combination of comfort and style. With 8mm of memory foam and the built-in Aetrex Orthotic System, the Sydney provides ultimate comfort along with style and height.

• The Aetrex Cobra Orthotic System is Built-In to every pair:
• Arch support helps to stabilize and align feet
• Arch support helps to relieve common foot pain & plantar fasciitis
• The memory foam footbed provides cushioning & comfort