These Semi Circles are are made of 11 pieces of birch plywood and coated with food grade beeswax or water based colour stains. In combination with our rainbows, tunnels or building boards, one can build with with their imagination. Size: 36 x 18 x 12 cm Material: High quality Merkusi Pine from sustainably managed forest, certified water-based non-toxic stains. Merkusi Pine from Indonesia is stronger than all the pines from America, Australia or Europe. It's strength is comparable to birch wood. Recommended ages: 2+, parental supervision is required during play. Note: Being handmade products, the colour and grains may of each tree may differ slightly from the one on the photo. This item should not be submerged in water. Use damp cloth to clean the toy.