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 adapters are made from TR90 material, known for its flexibility, durability, and lightweight properties. The ski goggle adapters fit securely into most adult-sized ski goggles, using a sub-frame with four arms to hold the insert firmly in place. Stabilize Your Glasses: Eliminate the need for over-the-glasses goggles or risking damage to your everyday eyewear. These ski and snowboard goggle insert adapters help stabilize your glasses, reducing slippage and maintaining clear vision. They are easy to transfer 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. Practical Gifts to Share: With 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 clarity on the slopes.