Claudia it's a super thin single black cotton band lash made of plant fiber material; the weight of it will be more light and the hair will be more softer textures, 100% vegan and cruelty free, skin-friendly and environmental - friendly; can be recycled over and over again. It can be  hold even more than 3 days or sayit can be used more than 30 days, Waterproof, super wispy and natural.