Water erasable pen/pencil: It's also named water soluble pen/pencil, water disappearing pen/pencil. 1.The marking can not disappear by itself or spontaneously. 2.Easily and quickly erasable by water and damp cloth. 3.It can bewritten on many kinds of material's surface,especially use for fabric and clothing marking, garment and shoe marking,leather and wool marking, plastic and glass marking, ceramic and wood marking, and other materials like handicraft,embroidey,artificia flowers,etc..for temporary making. 4.We can provide a variety of tubes/barrels, nib sizes and packing according to your specific requirements. And usually 2 colors available, blue for light color materials and white marker for dark ones. 5. Non toxic ink, and conforms to ASTMF963 and EN71PART3.