Item: Tape In Human Hair Extensions 18" 20" 22" 24" Machine Made Human Hair On Adhesives Tape PU Skin Weft Invisible 20pcs Brand:Smartinnov Length & Weight & Package: 18 inches = 45cm, 2.0g/pc, 40g per pack, 20 pieces total. 20 inches = 50cm, 2.5g/pc, 50g per pack, 20 pieces total. 22 inches = 55cm, 2.5g/pc, 50g per pack, 20 pieces total. 24 inches = 60cm, 2.5g/pc, 50g per pack, 20 pieces total. Dark color: 1B#, 4#, 6#, 8# Middle color: 24#,27# Light color: 16#, 18#, 24#, 60#, 613# Piano color: 4/27#, 4/613#,6/613#,12/613#, 18/613#, 27/613# Ombre color: T2/613# Hair Quality: 1)100% Real Natural Human Hair Used, No Synthetic, No Animal Hair,Soft, Smooth, Glossy, Silky . 2)Tangle Free and Shedding Free. Can Last Long time for Good Care. 3)Can Be Curled and Straight. Can Be Dyed to Darker Color. 4)Invisible Tape. Natural Wave Hair Extensions,Comfortable And Invisible On Head . Tape Size & Tape Brand: Tape Size: 4cm wide x 0.8cm high. Tape Brand: Strong Double Sided Smartinnov Tape Used. Application Suggestion: If you have short hair, want long & volume effect, Buy 4 lots please ( 80 pieces ) If you have long thinner hair, want more volume, Buy 2 - 3 lots please (40 ~ 60 pieces ) If you want highlight effect, or more volume, Buy 1 lot please ( 20 pieces )