Article of footwear, sole and pump arrangement for use in same, and method of making same

摘要: An article of footwear has a shoe upper, sole connected to the upper and is provided with peripheral walls which together define cavity therein. A layer material extends across or adjacent at perimeter material, dividing into least first chamber second chamber. The on one side chamber, other configured such that movement within causes simultaneous changing interior volume between chambers thus pumping air out for circulation footwear.