Plenty Package: Includes 4 universal RX goggle inserts that allow you to convert most standard goggles to prescription use in seconds. The quantity provided supports daily use, replacements, and sharing with family or friends. Quality Materials: These snowboard goggle RX insert optical adaptors are made from TR90 material, known for being flexible, durable, and lightweight. The ski goggle adaptors fit securely into most adult-sized ski goggles using a sub-frame design with four arms that hold the insert firmly in place. Stabilize Your Glasses: Eliminate the need for over-the-glasses style goggles and reduce the risk of damaging your everyday eyewear. These ski and snowboard goggle insert adaptors help stabilize your glasses, prevent sliding, maintain clear vision, and can be easily transferred between different goggles. Widely Applicable: Designed for broad compatibility with various goggle models, including ski, motorcycle, and tactical goggles. Simple and convenient to install and use. Practical Gifts to Share: With thoughtful design and easy setup, these inserts make practical gifts for friends, colleagues, classmates, parents, relatives, or anyone who enjoys skiing or winter sports, allowing them to experience comfort and convenience on the slopes.