What does "Flex-Change" mean?

Flex-Change is the term or brand that we use to describe our line of LED Christmas lights that have removable and interchangeable bulbs. The Flex-Change technology allows the user to create custom light sets by removing and interchanging bulbs of different colors and shapes with other Flex-Change products. We also offer LED replacement bulbs for our Flex-Change line so bags of individual bulbs can be purchased. Unlike low quality two-piece construction LED Christmas lights, our Flex-Change lights feature corrosion proof fittings so the connectors will not rust.