Round shoelaces work well on hiking boots as well as sneakers.

Diameter: 3/16 inch (all silver laces are 2/16 of an inch)
Length: 27, 36, 45 or 54 inches

Shoelace length options:
27 inch: 3-4 Pr Eyelet (shoelace holes)
36 inch: 5 Pr Eyelet (shoelace holes)
45 inch: 7 Pr Eyelet (shoelace holes)
54 inch: 8 Pr Eyelet (shoelace holes)