★Size Chart
Size(USA)------Heel to Toe (cm/inches)
----- 4.5 ------------21.5cm, 8 1/2"
----- 5 ------------21.9cm, 8 5/8"
----- 5.5 ----------22.3cm, 8 7/8"
----- 6 ------------22.8cm, 9"
----- 6.5 ----------23.2cm, 9 1/8"
----- 7 ------------23.6cm, 9 3/8"
----- 7.5 ----------24cm, 9 1/2"
----- 8 ------------24.5cm, 9 5/8"
----- 8.5 ----------24.9cm, 9 7/8"
----- 9 ------------25.3cm, 10"
----- 9.5 ----------25.7cm, 10 1/8"
-----10 -----------26cm, 10 3/8"
-----10.5 ---------26.6cm, 10 1/2"
----- 11 ----------27cm, 10 5/8"
----- 12 ----------27.8cm, 11"

★How to Choose Size
The best way is to measure your feet length and contrast your length with the size chart above.
1. Stand firmly on a piece of blank paper;
2. Draw outline of your foot;
3. Mark and measure your foot length on paper;
4. Take your measurement to be as reference according to above size chart.
How to use Quick Release Buckle
1.Take the strap & adjust the buckle position to the hole you usually use；
2.Pull the strap downwards over your ankle, so the buckle comes past the latch opening.
This makes it much easier to slot the strap into the latch opening.
Now to take it off, We do the reverse
1.Pull the strap downwards until the buckle and latch pop apart
2.Slip out the strap from the latch and you're done!
Now you can get your shoes on & off in a flash!