Premium quality EcoPencils made from re-forested wood are highly pigmented for a richer color lay down. Colors are vibrant and blend easily. The ergonomic triangular shape with patented Soft-Grip zone ensures an easy, secure hold for fatigue-free and comfortable drawing. Leads are break-resistant and will not fall out. Sonlight resource: https://www.sonlight.com/products/colored-pencils-with-grip