Thanks for contacting us about your labels - Our iron on labels are our most popular, and certainly should be sticking to microfibre! Our labels need to be applied with right amount of heat for the bonds to seal, and then not washed for around 48 hours. It is very rare that we ever have the labels not stick after the heat has been applied, but obviously with everyones different irons we can't give you specific setting - I would suggest using some more heat as this sounds like the problem! Thanks for your review :)
Kind Regards,
Stuck on You Customer Service