Weight Approx. : 160G/Set For A Full Head (If you like THICKER or need LONG HAIR, its best to wear ONE MORE bundle. As the Longer the length is, the Thinner the hair is.Hair Material:Japanese Kanekalon High Temperature Synthetic Fiber With Human Hair Quality Touch. The high heat resistance technology can safely handle temperatures up to 360°F.Length Approx.: Wavy 18" (stretched 20")Color: Natural Black To Mixed Olives To Peacock Green As The Pictures Show (We have 12 different Colors. If you need it, please feel free to contact us via email or Whatsapp.Packing Including: 8 Pieces (18 Clips) Clip-In Hair Extension, 2 x 1.2"; 1 x 3"; 2 x 4"; 2 x6"; 1 x 8" A set of 8 Pieces: 1 pcs - 8 inch piece (for the back of the head) with 4 clips 2 pcs - 6 inch pieces (for the back of the head) with 3 clips 2 pcs - 4 inch pieces (for the back of the head) with 2 clips 1 pcs - 3 inch pieces (for the sides of the head) with 2 clips 2 pcs - 1.2 inch pieces (for the sides of the head) with 1 clip How To Curl 1, Make sure to set your curling iron between 200°F-360°F（93°C-182°C. 2, Spray water on the hair. 3, Roll up the sectioned hair in the iron for 2-3 seconds. 4, Blow on the curl and cool for 2 seconds. 5, Repeat step 2-4 until you achieve desired look.