Keep Calm AND LOVE MATH CHALKBOARD EQUATIONS - Iron on 4x4 inch Embroidered Edge Patch Applique 4" Tall by 4" Wide Embroidered Edge Printed Design Iron On Patch - heat seal backing Super strong heat seal glue backing. This patch can be iron on or sew on to any garment. Excellent machine wash performance. It will never come off. Ideal for adorning your jeans, hats, bags, jackets and shirts. Only 15 seconds you can DIY your own style garments. Exclusive to Hat Shark and officially licensed! You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!