Footwear Having a Variable Sized Interior
Patent, Filed 22 Aug 97, patented 17 Aug 99
DEPARTMENT OF THE NAVY WASHINGTON DC
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A variable size footwear includes a sole, an upper fixed to the sole and an insole overlying the sole within the upper. An inner sock of elastic material is fixed to the sole andor insole. The sock in an unstressed state is smaller than the upper, but is expandable to a size conforming to interior walls of the upper. The sock is fixed at an upper edge thereof to the upper.
- Protective Equipment