Sennelier's extra-soft pastels are comfortable to hold and allow for large areas to be covered with lush, luxurious color. Created at the turn of the 20th century, these extra-soft pastels have one of the largest chromatic ranges available for pastels. Each pastel is composed of high quality pure pigment and a natural transparent binder. The exceptional brightness of these pastels is the result of the pigment and the natural mineral fines discovered by Sennelier in 1905 that have been used ever since. This set contains thirty half sticks. Each half stick measures 1.25 x .5 in.