Fine Ingredients1. The pen case is made of quality cloth, lightweight and can be applied for a long time 2. The sticky notes are made of PET , which can stick well to the notebook or wall and will not peel off easily. 3. Our highlight pen markers are made with soft chisel tips, allowing you to write comfortable, wear resistant, smooth for writing, drawing. 4. The ink pens are filled with 0.5mm fine point with smooth-tech mechanism for extending and retracting the writing point.