AIR OPTIX (tm) for Astigmatism contact lenses by Ciba Vision are a breakthrough in soft contact lenses and represent a new option for contact lens convenience and comfort. The design of AIR OPTIX (tm) for ASTIGMATISM offers success in fitting the first time, while providing exceptional stability, predictability and visual acuity. FEATURES: 5x more oxygen - state of the art breathable contact lenses; Breathable lens - high oxygen transmissibility; Unique lens surface - plasma surface treatment creates a cleaner lens surface; Blue visibility tint - for excellent handling for easier insertion and removal; Approved for extended wear - daily wear and up to 6 nights extended wear; Recommended replacement schedule - up to 4 weeks. Please Note: AIR OPTIX(tm) for ASTIGMATISM is the same product as O2 OPTIX(tm) for ASTIGMATISM.