Most colour-fast fabric pain/pens?

[TheHouseofMirth]

I bought some linen tea towels for DS1 to decorate for Christmas presents but assuming they get used I'm wondering if anyone can give me advice on the best fabric pens or paints to use?

hmm I know the ones from Hobby Craft work as had to use the pens and also some little pots of squeezy paint.

Once drawn on, leave to dry and then iron and the paint will stay on. I did have problems with the bubble paint as it flaked off but the rest were ok.