Sharpie Fine Permanent Markers contain quick drying ink which is water and fade resistant so you can mark most surfaces permanently. You can use them to mark almost any hard surface including cardboard boxes, glass and thick cards or papers. This pack contains 4 Sharpie Fine Permanent Markers in an assortment of colours. The marker will not dry out if left uncapped for 30 mins and if you recap it, it will recover overnight. The ink is fast drying, fade and water resistant and is AP Certified non-toxic. The ink is permanent on most surfaces. The 1.0 mm fine tip gives you plenty of control for more precise marking while still providing a bold, consistent line.