SilSoft Contact Lenses are the best option for pediatric patients and adults recovering from cataract surgery. They are designed with cast-molding technology using 99.8% elastofilcon A, a material that enables the highest oxygen transmission to the eyes, so they can breathe throughout the wear. SilSoft Contact Lenses also contain 0.2% water for keeping the eyes well moisturized and refreshed. Expect optimal comfort and crisp vision. Can be worn overnight!