Please choose the color from the size option. You can find the color numbers from the 
<br />pictures. The numbers in the size option are not the size of hair , but the color
<br />of hair extensions. There is only one size of the hair extensions but fit all the head.
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<br />Our hair is the Heat Resistant synthetic fiber, can be used by the hair straight and the curly iron.
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<br />Length: 24 inches