Waterproof footwear construction

A footwear construction that includes an improved footwear upper liner is provided. The liquid impermeable footwear upper liner is constructed of air permeable, waterproof and moisture vapor transmissive materials as well as air impermeable, waterproof and moisture vapor impermeable materials. A process for constructing a footwear component utilizing the improved footwear upper liner is also provided. The process comprises providing a sole; providing an upper that together with the sole define a volume for receiving and protecting a wearer's foot against external elements and securing the improved liquid impermeable footwear upper liner within the footwear so that the footwear upper liner is located underneath the upper. In an alternative embodiment, the improved footwear upper liner is attached to a sole to form a bootie for use in footwear construction.