From the manufacturer:
These brush-tipped fabric markers mark on most fabric surfaces including clothing, T Shirts, shoes, backpacks, lunch boxes and more. Their specially formulated ink resists fading on most fabrics during normal wash cycles. The 8-color set includes black, red, blue, green, pink, orange, purple and yellow. Each set also includes a "Stained 101" guide that contains tips and techniques for using Stained by Sharpie to mark on and customize personal items.
Also available individually!