These holographic vinyl sheets empower children to explore concepts of interference, reflection and diffraction of light. When light hits the silvery sheets, it reflects creating a prismatic rainbow sensory experience! Expose to different sources of light and observe varying rainbow patterns. Build with the Shimmer Sheets and create the world’s most colorful play house! Comes with adhesive backing for easy installation in the frame side of a Panelcraft® panel and an installation guide. Panelcraft® panel sold separately.