Glossary - Boot TermsThere are 2 entries in this glossary.
Poron® is a high-density, flexible urethane originally developed by N.A.S.A. This shock-absorbing, long-life memory foam adds cushioning to a footbed or insole while also drawing moisture away from the foot to create a dry and healthy interior. Poron® does not break down and maintains its shape over time.
Stainless Steel Bottom Plate: Meets All Current ASTM Standards.