Kneadable 
The Giorgione Kneadable Art Eraser is a soft, flexible eraser tool designed for artists working with pencil, charcoal or pastel. It allows for precise shaping, lifts pigment cleanly without heavy abrasion, and is well suited for highlight removal, subtle corrections and refined detailing. If you do a lot of subtractive drawing (erasing to create form/highlights) or need a tool that moulds to your hand and workflow, this is a very useful accessory.