About this item HIGH WEIGHT CAPACITY - Durable aluminum construction supports up to 600 lb capacity making it perfect for heavy scooters and electric wheelchairs. STURDY STRUCTURE - Constructed from concrete decking with a steel frame, these wheelchair ramps are designed to resist weather, fire, and impact so you can leave it in outsides. ESAY TO USE - Portable wheelchair ramps are designed to be lightweight. Ramps fold in half so they can be carried like a suitcase with a handle in two sides and can be separated into two pieces for easy carrying. DEMENTIONS - Folds to 16" wide by 3" high for portability in cars or to store away when not in use.Unfolds size:36" long, 29" wide,wide enough for most wheelchairs, scooters, walkers and bikes. SAFE & STABLE DESIGN - Traction tape design prevents slipping and adds safety; Waterproof so you can leave it outside.Durable and stable stainless steel hinge provides stability,thicken curb on both side to stable the ramp.