Benefits: Consistently clear vision. These lenses have increased stability to prevent rotation & blurred vision. Lasting comfort. The surface technology retains moisture that limits the build-up of uncomfortable dirt & debris. Flexible wearing schedules. Depending on your Optician's advice you may be able to wear these lenses overnight. Air Optix For Astigmatism provide constant visual acuity because they are designed to remain stable on your eye. Due to the high levels of oxygen allowed through to your eyes, these lenses can be worn daily for up to a month or overnight for six consecutive nights, but you must follow the advice of your optician if you wish to change your wearing schedule. The material & technology used in manufacture allow Air Optix for Astigmatism to provide lasting comfort & hydration, ensuring healthy vision & bright eyes. Sold by Specsavers as Monthly Irisian Toric