These Junior Rainbow Pebbles are made of natural FPC material, with each pebble having it's own unique natural grain. the 2-double sided activity cards are designed in natural color tones to match the pebbles. Set includes Junior Pebbles in 3 shapes, 6 colors, 36pcs with 8 x 2-sided activity cards. New FPC Eco-friendly material These Junior Rainbow Pebbles are made from FPC (Fibre Particulate Composite) which replaces plastic as the raw material. FPC is 100% made from agricultural waste rice stems and rice husks. FPC has many advantages:Breaks down in the environment, Produces zero pollution with large savings in energy and water usage during the manufacture of the FPC raw material, Fully recyclable Size range: 2.9"L x 1"W - 1.6"L - 1.5"W