The filler can penetrate deeper, and activate soft toys in the form of a soft book. On the other hand, when using a soft book pencil, it will be hard to find and hold the shape of a soft toy. Hence, with the pencil soft sharp, or in soft pencil filler, it can penetrate deeper, and activate soft toys by working directly on the pencil, which is soft and sharp. On the other end of the pencil, it is soft and sharp.
When using synthetic leather, there is also a soft-touch-resistant surface that can make the fabric look soft and feel luxurious. On the other hand, synthetic leather is not a soft material.