These patches are embroidered on felt material.  They are iron on and can be applied to most materials that you can iron (i.e. sports bags, backpacks, clothing, hats, etc.).  They are approximately 3".

You will need to peel the paper backing off and place the patch embroidered side up on your item, place a cloth over the embroidery (DO NOT PLACE IRON DIRECTLY ON THE EMBROIDERY), using an iron on medium heat NO STEAM, iron for approximately 8 seconds and let cool.  

You may want to hand tack around the boarders to keep the patch from coming up with wear and washing.  

Washing instructions:  Wash per the instructions on your item, inside out if possible with cold water, low dryer.