Size Note:

CChoose your size according to your feet length, For slippers, if you want to loose a little, you can choose a big one size, it is also very comfortable.
US size 3.5 =CN size 36/37=22.1 CM-23.0CM,
US size 4 =CN size 38/39=23.1 CM-23.5CM,
US size 4.5 =CN size 38/39=23.1 CM-23.5CM,
US size 6 =CN size 40/41=23.6--24.0 CM,
US size 7 =CN size 40/41=23.6--24.0 CM,
US size 7.5 =CN size 42/43=24.1 CM-25.0CM,
US size 8.5 =CN size 42/43=24.1 CM-25.0CM,
US size 9 =CN size 44/45=25.1 CM-26.0CM,
US size 10 =CN size 44/45=25.1 CM-26.0CM,
US size 11 =CN size 46/47=26.1 CM-27.0CM,
US size 12 =CN size 46/47=26.1 CM-27.0CM,
US size 13 =CN size 48/49=27.1-28.0 CM,
US size 14 =CN size 48/49=27.1-28.0 CM,
US size 15 =CN size 50/51=28.1-29.0 CM,
US size 16 =CN size 50/51=28.1-29.0 CM,