They are made of 100% human hair, the best quality, tangle free, no color fade. They can come in straight or curly in different colors and lenghts.For the clip in hair, we can sell them single PC by PC, or set by set.At present, most clip-in hair is made simply by cutting one hair weft into several sets, thus makes the hair very loose and easily dropping off. Moreover, each set is too thin. Our clip-in hair is hand-made set after set in the factory. So, more hair is added to each set to make it more tighten together and looks much thicker! Besides, we adopt new creative design, making each sets cambered to fit head even more, Therefore, it will looks as natural as real!