The pastels are made in Northumberland and contain only pure pigments in a cycle of related hues, instead of adding white or black to the colours. The result is intense, vibrant colour not muddied by the blending of colours.

Unison's pastels contain very little binder, making them truly soft and smooth. They are mixed to meticulous recipes and are based on traditional pigments such as cadmiums, cobalts and natural and synthetic earths.

Pastels measure approximately 2-1/8in long × 5/8in diameter (54 mm × 16 mm). Sticks vary slightly due to the hand-making process.

Set contains the following 18 colours specifically for use with portraits:

Blue Violet (BV16) Additional 18 (A18) Blue Green Earth 17 (BGE17) Additional 19 (A19) Red Earth 3 (RE3) Additional 20 (A20) Red Earth 4 (RE4) Additional 26 (A26) Red Earth 14 (RE14) Grey 2 (G2) Red Earth (RE18) Grey 11 (G11) Brown Earth (BE8) Yellow (Y1) Red 6 (R6) Yellow 16 (Y16) Red 9 (R9) Yellow Green Earth (YGE1)