| http://www.w3.org/ns/prov#value | - The prior art has dealt mainly with visible means of girth adjustment such as laces, adjustment straps, and the like, most of which usually do not provide adjustment at the ball of the foot; nor are they useful in the many popular non-adjustable shoe styles, such as boots, slip-ons, loafers, women's pumps, flats, and so forth.
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