Pro Patches USA offers 'pre stitched letters & numbers'. All letters/numbers have a row of zig zag stitching around the edges to give it that professional, sewn look. Save time & money by avoiding having to sew these numbers & letters onto your garment. Each letter/number has heat sensitive adhesive on the back that can simply be ironed down or for best results, use a heat press. A zig zag stitch is carefully placed along the edge of each number & letter to give that sewn on look when you receive it. Just iron on and you're done, that's it. Cut your costs by not having to do any sewing work. All pre-stitched lettering takes approx 7-10 business days to be completed prior to shipping.