F-US10=UK7=EU40(custom sizes are non-returnable and non-exchangeable)
F-US11=UK8=EU41(custom sizes are non-returnable and non-exchangeable)
F-US12=UK9=EU42(custom sizes are non-returnable and non-exchangeable)
F-US13=UK10=EU43(custom sizes are non-returnable and non-exchangeable)
