This set provides a balanced color palette and multiple opacities. The 24 x 20 ml tubes of Amsterdam Standard Series Acrylics are made with high-quality pigments and 100% acrylic emulsion - this medium viscosity paint provides nice brush strokes and texture, but can also cover large areas with a smooth color. Keep our planet clean The trays in all Amsterdam sets are made of 100% recycled plastic and are produced locally. Also, the cardboard packaging is partially made of recycled cardboard. This packaging is 100% recyclable.