Royal Envy hair extensions are 100% remy human hair! Riki is a rooted level 6 melted down to a two toned bright blonde with a low light level 8. Each package of tape ins come with 10 pieces and 20 inches in length. One piece is 2.5 grams, making one full pack 25 grams of beautiful hair! We recommend 4-6 packs for a full set. With the proper care, these extensions will last 6-8 months.  **All hair sales are final**