This weather stripping is made of soft rubber and may trim the sealing strip to fit all doors or windows. It is flexible, waterproof and washable, can be used for inside or outside application, for commercial or residential doors to help control your environment. This weather stripping with strong resilience after extrusion is good for collision avoidance; great for preventing wind, dust, sound, cold, protecting the window and door, and reducing the abrasion and noise effectively on window/door while open and close. Foamed by EPDM, same smooth interior and exterior, great elexibility, high resilience.