Conformable Booties, Shoe Inserts, and Waterproof Breathable Socks Containing an Integrally Joined Interface

This is a waterproof and breathable bootie designed to fit inside shoes. It's made from a single piece of ePTFE material that is shaped and joined to itself, creating a seamless form. This unique construction allows the bootie to stretch or shrink to fit various shoe sizes and shapes, eliminating the need for traditional waterproof seam tape.

Why it matters: Since 2014, advancements in precision polymer forming and bonding technologies may have made creating integrally joined ePTFE structures more efficient. This could reduce the specialized manufacturing challenge of producing seamless, conformable booties.

Status: ExpiredProtection ended and was never renewed
How hard to build: SpecializedePTFE material forming and joining

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