Ardell Seamless Underlash Extensions 3D Faux Mink Refill Whether you’re a lash enthusiast or a beauty novice, Ardell’s Seamless Underlash Extensions make the customization process a breeze. The inclusion of 4 different lengths—10 mm, 12 mm, 14 mm, and 16 mm—opens up a world of possibilities, allowing you to tailor your lashes to match your desired style. The seamless integration of the 4 different lengths ensures a volumized effect that is both glamorous and natural, depending on your mood and the occasion.So, whether you prefer a natural flutter or dramatic allure, these 4-length customizable fibers offer endless options for expressing your individual style. The seamless integration of the 4 different lengths ensures a volumized effect that is both glamorous and natural, depending on your mood and the occasion. Save time without compromising on style, and enjoy the convenience of achieving a flawless, volumized underlash look in no time.