A shoe is fabricated from an upper structure and a sole structure wherein
the sole structure contains a gas-filled cushioning device composed of a
multi-layer film formed into a gas-filled membrane having an interior
compartment enclosing at least one capture gas. The multi-layer film
comprises an outer layer of an elastomeric thermoplastic material such as
a polyurethane, an inner layer of an elastomeric thermoplastic material
such as a polyurethane, and a barrier layer interposed therebetween which
is derived from a combination of at least one ethylene-vinyl alcohol
copolymer and up to about 50 wt. % of an aliphatic thermoplastic urethane.
