Weight:120g/4.5oz Length:20 inch Material:High Resistant Synthetic Fiber Suitable Occasions: daily use, cosplay, concerts, costume, theme parties and any other occasions. Also will be nice gifts for your friends and families How to Apply 1.place the hair extension with the wire sitting behind the line, gently push down to fit over the ears and sit the base of the skull. 2.Either split the hair around the ears or leave over the top as pictured 3.Use the tail comb pull your own hair over the hair extension to completely hide the wire and enjoy beautiful, longer, fuller hair in just minutes. Warm tips: Synthetic hair fiber may get tangled and static after 2-3 wears,especially in winter.To prevent it, you can use a spray bottle and put some conditioner in it, then fill it up with water. Spray it in the hair extensions. It will make the hair extensions not very dry and prevent getting tangled in some extent.