A waterproof shoe includes a waterproof breathable lining sleeve which is mounted inside an upper and which is made of an air-permeable waterproof material, and a cup member attached to a bottom end of the lining sleeve. The cup member is made of an air-impermeable waterproof material and includes a...http://www.google.co.uk/patents/US6851205?utm_source=gb-gplus-sharePatent US6851205 - Shoe having a cup member connected to the bottom of a waterproof breathable lining
