Easily iron on the patch to your material setting on cotton. Sometimes it is good to place the patch on the material and put a towel gently over the patch and iron the towel so to not scorch the linen you are heating the patch to.
For extra durability, you can hand or machine sew the patch to your linen. We do not recommend ironing patches on to vinyl or leather products.
Some irons do not get hot enough so it you find the patch does not stick to the material after ironing, either try the iron on the material longer or use a different iron.
As always you should follow instructions from the maker of the product you are putting the iron on patch on. Some materials are advised to not iron on.