"The Titan Ramps 4' x 30"" Single Folding Ramp is a lifesaver for wheelchair or mobility scooter users who need quick assistance with single steps. This ramp is multipurpose and is wide enough for most wheelchairs, scooters, walkers, and bikes. With its 500 lb. weight capacity, it can support most chairs and scooters. Its high-traction, waterproof surfaces ensure safe and easy transport in all conditions. This ramp's safest and most secure placement is over a single step to protect against overly steep inclines. Place it against the incline to roll up a short rise to the next level. The ramp is designed with slip-resistant traction tape so you can get through doors safely, regardless of the weather. You can even leave it outside all year round. When the ramp is no longer needed, fold it into its briefcase design to make transportation quick and easy. It fits easily inside car trunks to bring it wherever you need it."