The PVI Singlefold Ramp (2 to 8 feet) is a single fold, portable ramp designed for everyday use by wheelchair users. The portable ramps are covered with a high grade/high tack rated adhesive backed non-slip tape for traction in rain and snow. Suitcase Design folds In half and carries like a suitcase. A handle makes it easy to carry and store. Aircraft Grade Lightweight Aluminum PVI has the lightest wheelchair ramp on the market. Fits most wheelchairs and scooters.