Tri-fold Portable Ramp Design The unique tri-fold portable ramp design of the SUITCASE® Trifold AS Ramp makes it easy to set up and easy to transport from place to place. This tri-fold portable ramp can separate into two easy-to-carry sections. Slip-Resistant Portable Ramp Surface The SUITCASE® Trifold AS Ramp offers an applied slip-resistant surface. Interlocking Hinge When operating the SUITCASE® Trifold AS Ramp, take notice of the interlocking hinge, designed for smoother operation and reduced pinch points. Self-Adjusting Bottom Transition Plate The SUITCASE® Trifold AS Ramp also features self-adjusting bottom transition plates, which adjusts the tri-fold portable ramp to most surfaces, making the SUITCASE® Trifold AS Ramp one of the safest portable ramps on the market. The SUITCASE® Trifold AS Ramp is constructed with aluminum, offers a built-in carrying handle and is used most commonly for wheelchairs and mobility scooters. Please see usage guidelines on Technical Specifications for more info.