The Nylon Loop band comes in 3 distinct sizes: small, medium/large and extra large. Each size is fully adjustable.
Small
13mm | Fits wrist: 3.5 in – 6 in | 88 mm – 152 mm
19mm | Fits wrist: 3.5 in – 6 in | 88 mm – 152 mm
Medium/Large
13mm | Fits wrist: 4.5 in – 7.75 in | 114 mm – 196 mm
19mm | Fits wrist: 4.5 in – 7.75 in | 114 mm – 196 mm
Extra Large
13mm | Fits wrist: 6 in – 9.25 in | 152 mm – 235 mm
19mm | Fits wrist: 5.5 in – 9.5 in | 139 mm – 241 mm
    Still need help deciding? Follow these steps:

    Step 1
    Fold a dollar bill in half. No dollar bill? Simply use a 6.125" (15.5 cm) strip of paper.
    Step 2
    Gently wrap around your wrist. Note the width of the "gap" between the edges. For proper sizing, do not wrap the dollar too tightly.


    SMALL:
    Gap is LESS than 1/4" (6 mm) or the bill overlaps 
    MEDIUM/LARGE
    Our most common size: Gap is between /4" (6 mm) and 1 3/4" (44 mm)
    EXTRA LARGE:
    Gap is GREATER than 1 3/4" (44 mm)