- Two tone Colored eyelash extensions There are a various colors and single colored products. - Detailed Description Material : PBT(poly-butylene-terephthalate) Color : Red, Green, Purple ETC. Other colors are made to order. Thickness : Standard 0.15mm Length : 4mm ~ 15mm Curl : J, JC, C, CC (Standard) Packaging : 16 lines in 1 Case(Black or White)