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, and poor drainage areas. Easy to Install. Replace existing and old bottom weather stripping. No screw or nail is 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, and keep your garage warm.