Frog closures are an ornamental alternative to traditional button closures on clothing; they often prove to be sturdier than buttons because of their more permanent design. These Chinese-inspired closures appear in many forms, sometimes including elaborate designs that stitch the closure onto a garment. The name "frog" alludes to the structure of the closure, which tends to spread out onto a garment like frog legs. The level of difficulty for crafting a frog closure depends upon the intricacy of the "frog legs." It can be as easy as making the "legs" rest flat on the garment or as difficult as carefully twisting the cord to create a more specialized design.
Hold the first cord in the shape of an upside down letter U. Create a loop by folding the left end of the cord over the right end. For most garments, the length of the pieces ranges from 3 to 5 inches. For more elaborate designs, the length of each cord usually exceeds 5 inches.
Twist the right tail of the cord into another loop. The two loops should be equal in size.
Twist the two dangling legs of the cord to the right one time.
Pull the right leg through the two loops from right to left. Pull both legs to tighten the knot into a ball.
Cut the dangling cord to your desired length, keeping the ends equal. At this point, you may either stitch legs flat to garment (parallel to hemline) or fold them into a specific design. A common design for the legs of a frog closure is a pretzel shape. To secure the design before sewing, place pins at spots where the cord curves or twists.
Fold the second cord into a loop. Place it on the opposite flap of the garment, mirroring the knot sewed to the other side. Sew the legs of loop to the garment, leaving room for the knot to fit inside the loop to create a closure.