Sweet Lash Signature lashes are the most flexible, lightweight, and softest extensions available. Our Silk Lashes are packaged in trays for greater organization, speed and efficiency - 16 rows and over 4000 lashes per tray. Our Signature Silk lashes are manufactured from sterilized PBT materials and have a deep, rich black finish. They boast a semi-gloss (satin) finish, and are incredibly flexible. Double heat sealed for amazing curl retention and consistency.