Premier Soft Core
Used by 4 peopleprismacolor.com ↗

“For drawing I like to use Tombow pencils and Prismacolor Premier colored pencils.”
Hiller Goodspeed Interview, Illustrator · via Uses This 
“To highlight parts of my drawings, I sometimes use Prismacolor Premier Soft Core colored pencils which my illustrator friend said are the softest.”
Nikki Sylianteng Interview, Interaction Designer · via Uses This 
“I have a big nice box of 132 Prismacolor Premier drawing pencils.”
Claire Robertson Interview, Writer, illustrator, crafter · via Uses This