4 Color Lens Kit (Snap on Snap off) Acrylic Lens for your Millennial Led's. Secure with included rubber bands to keep from loosing them. Never NEVER turn on the lights with lens attached unless they are UNDERWATER. These thin Acrylic lens will rapidly deform and/or melt quickly with the tremendous heat generated by your lights. Every light purchase will receive a FREE set of lens, however additional sets maybe ordered. RED,GREEN,BLUE and YELLOW and only takes seconds to change. It's like having 5 lights in one, THAT's FIVE for the price of one.