Each. TRANQUILEYES™ MOISTURE RELEASE EYEWEAR - Stylish, lightweight frames with two vented chambers for Dry Eye relief. The chambers, which contain a piece of foam, are soaked in water and placed back into the frame where they are positioned to continuously release moisture around the eyes. A comfortable, foam padded gasket and bendable nose bridge help seal the face and protect the eyes from wind, dust and pollen. Polycarbonate lenses with anti-fog coating ensure optimum performance. Each pair of Eyewear comes with 4 replacement cartridges and a microfiber cleaning/storage bag.