Located in Canada. If you are in the USA you will see the exchange rate (about 25% less) on your payment account statement.

Chacopa Kanda Fabric Pen

Chacopa

Water erasable extra fine tip blue pen.  Do not iron before you have washed the markings away completely or they may become fixed. Test it on your fabric first just to be on the safe side, but I have used it on cotton and cotton linen and it worked fine.