Plenty Package: Includes 4 universal RX goggle inserts that allow you to convert most standard goggles to prescription use in seconds. The included quantity 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 its flexibility, durability, and lightweight properties. 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 (OTG) 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: These universal inserts are compatible with a wide range of goggle models, including ski goggles, motorcycle goggles, and military-style goggles. Designed for simple and convenient use across various applications. Practical Gifts to Share: Featuring thoughtful design and easy installation, 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.