All PRO LASH products offer a lifetime money back guarantee with every purchaser! If you are not completely satisfied with our lashes, please contact me by FB/IG : ProLashBeauty . we will refund your purchase with no exception, ORDER NOW !. All Pre Fanned Russian Volume Lashes double heated the curl during manufacturing to have the flexibility resembling a natural lash so holding the perfect curl about 12 month and not easy to lose their curl . Specially treated the Premade fans root : ONLY PRO LASH use unique double heat bonding method to ensure an ultra light-weight lash without compromising strength , Ultra-thin base and the fans dont fall apart . Pre Made Russian Lashes is black PBT (PolyButylene Terephthalate) material . durable and can stand high temperatures .They are very soft and lightweight and matte dark , just like your own lashes and they are vegan. PRO LASH Short stem premade fans eyelash extension , Avaliable in 3D 4D 5D 6D , 0.07 /0.10 , C and D curl . 8 to 15 mm length and MIX length .