These are great quality, practical fabric markers from Homeware Base.  There are 14 different colours and each marker is dual-tipped, with a Chisel tip at one end and a Bullet tip at the other.

Chisel Tip Markers 

The chisel tip has one wide and flat side and also a thin edge.  This can be used for calligraphy or for creating slightly thinner lines, as well as for colouring in large areas.  

Bullet Tip Markers

The bullet tip of each marker is perfect for writing or colouring in small areas.

These pens would make a great gift for a budding young artist or for someone wanting to design their own t-shirt or create personalised gifts!