Product Information Item:Secret Fishing Line Hair Extensions Hair Type: Heat Resistance Synthetic Fiber Hair Hair Length: 20" (50cm)/24'' (60CM) Net Weight: 130g/150G Hair Texture: Wavy/Curly Hair Weft wide: 28x4cm Advantage： 1.It is Easy to Apply,no tape,no glue,no sew,taking few minutes for instantly thicker and longer hair without extra help in few minutes 2.there have 2 adjustable s hook on the hair curtain,you can easy adjust it to the size that suits you best. Moreover, there are Four safety clips to increase the hold on,but if you don't like it, it can be easily removed.