Our 8 year old 85lb pit bull loves to run and jump but cried one day when he tried to jump on the chair he loves to sleep in.  After that, he was afraid to jump.  We realized we couldn't get him in the car to go to the vet since he's heavy and had pain.  We ordered this and he reluctantly walked up it with the promise of a treat.  But, it got the job done - it is solid enough to hold him with no concerns and folds in half to store or transport easily.  It works in my husbands Mazda 3 hatchback.  Doggie is better but glad to have a good ramp as he ages.  Our dachshund had no trouble using it even without a treat.  This was a very good price and value.