We suggest that you should buy 2 set ! because this is real human hair ! very very soft ! Hair Lengths: about 16/18/20/22"（40/45/50/55cm） Weight: 0.5g/Strand, 100 strands per package, in total: 50g Hair Type: 100% remy human hair, soft silky straight Usage: Can be trimmed, dyed, washed, curled, straightened, the temperature is better under 180 degrees Celsius for a short time Package included: 50g/set Our Nail U-Tip hair Extensions are the quickest and the easiest way to add volume and length to your hair. These Hair extensions are made from 100% Real Remy human hair, each strand is kept cuticle correct (kept in the same direction from head to bottom) to maintain high resistance from tangling, hair shedding and keep it in its natural form.