Strong Traction and Non-skid Surface: Surface of our threshold ramp has non slip groove design to prevent slipping, falls by creating drainage paths and increasing friction. Even if it rains, it will not accumulate water. Adaptive Design & Flexible Use: This wheelhair threshold ramp have a strong self-adhesive backing, no assembly required, can be easily cut with a sharp knife to adjust to different lengths, and several can be connected as door threshold extension to use. Superior Materials: The threshold ramps for doorways is made of highly durable rubber material,that has excellent resistance to compression and No pungent smell. It is easy to clean and harmless to human body. Excellent Performance: The rubber threshold ramp can be safely used as a transition device for your threshold. Our solid and durable doorway ramp can hold up to 3000 lbs. Wide Application: This door threshold ramp is designed for robot vacuum cleaner, scooters, hand carts, wheelchairs, strollers, pets and walkers, etc. It can be used indoors or outdoors in areas with uneven heights. Rubber Doorway Threshold Ramp