This Premium Microfiber Lens Cloth from Sensei is an all-cotton, nonabrasive microfiber cloth designed for cleaning glass optics without smudging or streaking, especially when removing stubborn oily marks like fingerprints. The compact 8 x 8" size is suitable for camera lenses, binoculars, and sport optics. It may also be used to clean smartphone screens, tablets, and even eyeglasses. This premium cloth can be washed with soap and water, or machine-washed with laundry when fabric softener is not being used.