These straps are fastened using two snaps. One side snaps over your belt and the other around your mug. The straps are about 7/8” wide and 7” long when closed. One loop is about 2-3/4” and the other 3”.They are stocked in black with nickel snaps, black with black snaps and dark brown with brass snaps. Other snap combinations, strap colors or strap lengths are possible for a few extra dollars, so email me with requests.