Shoes contain a cable,please use your connect the USB port to charge the shoes. When charging,the light will automatically turn off until charging is completed. Size Info: US 8.5 M=EU 25-length 15.9cm/6.3in US 9 M=EU 26-length 16.5cm/6.5in US 10 M=EU 27-length 17.3cm/6.8in US 11 M=EU 28-length 17.8cm/7.0in US 11.5 M=EU 29-length 18.5cm/7.3in US 12 M=EU 30-length 19.3cm/7.6in US 13 M=EU 31-length 19.8cm/7.8in US 1 M=EU 32-length 20.5cm/8.0in US 1.5 M=EU 33-length 21.2cm/8.3in US 2.5 M=EU 34-length 21.8cm/8.5in US 4.5-Women/US 3-Men=EU 35-Fit foot length 221-225mm/8.7-8.8in US 5.5-Women/US 4-Men=EU 36-Fit foot length 226-230mm/8.9-9.0in US 6-Women/US 4.5-Men=EU 37-Fit foot length 231-235mm/9.1-9.2in US 7-Women/US 5.5-Men=EU 38-Fit foot length 236- 240mm/9.3-9.4in US 7.5-Women/US 6-Men=EU 39-Fit foot length 241-245mm/9.5-9.6in US 8.5-Women/US 7-Men=EU 40-Fit foot length 246-250mm/9.7-9.8in US 9-Women/US 7.5-Men=EU 41-Fit foot length 251-255mm/9.9-10.0in US 10-Women/US 8.5-Men=EU 42-Fit foot length 256-260mm/10.1-10.2in US 10.5-Women/US 9-Men=EU 43-Fit foot length 261-265mm/10.3-10.4in US 11-Women/US 10.5-Men=EU 44-Fit foot length 241-245mm/10.5-10.6in US 12-Women/US 11-Men=EU 45-Fit foot length 231-235mm/10.7-10.8in US 13-Women/US 11.5-Men=EU 46-Fit foot length 266-270mm/10.9-11in
