Portfolio Series Acrylics are ideal for the student artist for acrylic painting and applications as varied as airbrushing, printmaking, and marbling, without chemical additives. The vivid colours are rich in pigment, and they have a thick, tube-like viscosity. Can be diluted 8 to 1 for watercolour techniques without losing intensity. Portfolio Series Acrylics adhere permanently to paper, wood, fabric, and clay. They dry to a flexible water-resistant finish. Clean up is easy - just rinse with soap and water. Plastic recyclable bottles with flip-top lids.Portfolio Series Acrylic Paint is available in 470ml and 950ml bottles.