These spy sunglasses for kids feature built-in mirrors on the inner edges of the lenses, allowing the wearer to see behind them. The set includes three pairs with black frames and blue-tinted lenses, packaged in a protective cardboard box. Suitable for ages 3 and up, these glasses work as party favors, carnival prizes, or stocking stuffers. They fit easily into goody bags and can also serve as novelty gifts for adults. Each purchase is backed by a replacement guarantee if needed.