With its Advanced composite plastic construction holds up to 500 pound capacity, it's sturdy enough for humans. We stood on the PetStep II dog ramp (one of us weighs 190 pounds), bounced up and down and saw very little flex.
Designed to be rust-free and to float, the pet ramp measures 70 by 18 inches and comes assembled. A latching mechanism keeps it closed between uses. The PetStep II Folding Dog Ramp is easy to open and close plus it's lightweight - weighs only 18.5 pounds. The new non-slip surface is great going up and down. No slipping and sliding. The rubberized ribbed surface grabs dirt so less inside the vehicle. Soap and water for easy clean up. The PetStep II Dog Ramp accommodates a vehicle height of up to 37 inches. We like it..