Dear friend , When you order please according to your foot length to choose SIZE , if you are not sure about it please tell us your foot length (NO YOUR COUNTRY SIZE ) so we can quickly suggest size to you ,thanks .
Our product size standard
Size 4.5=EUR 34=220mm(bare feet length) Size 5=EUR 35=225mm(bare feet length)
Size 5.5=EUR 36=230mm(bare feet length) Size 6=EUR 37=235mm(bare feet length)
Size 6.5=EUR 38=240mm(bare feet length) Size 7=EUR 39=245mm(bare feet length)
Size 7.5=EUR 40=250mm(bare feet length) Size 8=EUR 41=255mm(bare feet length)
Size 8.5=EUR 42=260mm(bare feet length) Size 9=EUR 43=265mm(bare feet length)
Size 9.5=EUR 44=270mm(bare feet length) Size 10=EUR 45=275mm(bare feet length)
Size 10.5=EUR 46=280mm(bare feet length) Size 11=EUR 47=285mm(bare feet length)
(1 inch=2.54 cm ,1 cm=0.3937 inch,1cm=10mm)
If you don't understand anything, please feel free to contact online customer service.