Invisible writing pen with UV lamp - Write secret messages Invisible writing that can only be revealed with the included UV lamp Perfect for fun and secret messages, treasure hunts or surprises Safe and non-toxic, suitable for children and adults Explore a world of secrets and surprises with this pen for invisible writing with UV lamp. Write messages, draw pictures or create fun treasure maps that can only be revealed through the magic UV lamp. It is the ultimate secret tool for anyone who loves mysteries and surprises. Create your own secrets and adventures This invisible writing pen is not only a fun tool but also a creative toy that inspires children and adults to come up with own adventures. With its non-toxic and safe design, it is suitable for all ages. Use it to write secret messages to friends, to make invitations extra special, or to create exciting treasure hunts. The possibilities are endless with this fascinating and unique product. Specification - Product type: Pen with invisible writing - Function: Writing and revealing with UV lamp - Age: Suitable for all ages - Safety: Non-toxic - Use: Secret messages, treasure hunts, invitations etc