Patent ID: 7891116

Claim:
A rubberless form fitting neoprene boot waterproofed from the inside comprised of: a seamed composite sock fabricated from a neoprene foam that provides insulation, a tapable polyurethane film with titanium coating to provide heat reflection and allow waterproofing of said seams sandwiched by a tapable tricot liner to avoid capillary movement of water and stretchable external layer that may be stretched and formed upon a shoe last; a composite upper shaft section extending from said sock; wherein said upper shaft is a composite of said neoprene foam, said polyurethane film sandwiched by said tapable tricot liner and a semistretchable external layer that is a durable fabric; an external foot jacket attached to said upper shaft jacketing said sock forming an upper boot unit having internal seams; a series of thermoplastic heat sealing tapes to collectively seal all said internal seams against the penetration of moisture; a toe reinforcing stiffener and a heel reinforcing stiffener located between said stretchable external layer of said sock and said foot jacket; an inner sole secured to said sock by a border of said external foot jacket; an outer sole securely anchored to a bottom end of said inner sole.