Veevus Mono Thread is single-stranded, strong, and comes in a couple sizes and the colors black and clear to suit all of your needs. Mono thread is a staple for saltwater flies and provides translucency that just can't be found anywhere else--Bob Popovics exclusively uses Mono Thread for his flies, whether he's tying his famous Surf Candy, Hollow Fleye, or an Ultra Shrimp. Versatile and strong, Veevus Mono Thread should have a spot reserved on everyone's tying desk.