It's just sticky back sail tape. Any sailboat shop would have it (as long as you don't mind white). Murrays has colors. Also check Annapolis Performance Sailing (www.apsltd.com)

No sewing required. Just cut it to shape with scissors (round all corners to prevent peeling up), peel off the backing and stick it on.

Stuff comes on a roll in various widths. 2" or 3" width is probably the best.