Made of excellent durable high-quality rubber material, able to withstand being driven over by most vehicles. Flexible, will not crack, move or shatter despite temperature extremes, stay good from -40 ℃ to 140 ℃. Creates a barrier from insects, leaves, dirt, grass, wind driven rain, and snow to keep your garage dry, quiet and clean. Perfect solution for gaps from older warped garage doors, uneven concrete or pavement, poor drainage areas. Easy to Install. Replace existing and old bottom weather stripping. No screw or nail needed to install this black garage door sealer kit. Upgrade isolation: With 7 insulation round layers, it could reduce sound up to 5 times. Seal your interior and exterior door, keep your garage warm.