Walkin' Wheels Dog Wheelchair Medium Blue For dogs weighing 25 and 69 pounds with a leg height measurement between 15 and 18 inches Veterinarian approved for elderly, injured or paralyzed pets that cannot walk on rear legs No complex measurements required; push button adjustability in height, length and width Durable, lightweight aluminum frame and adjustable harnesses provide optimal comfort and mobility Folds flat for convenient transport and storage, Color Blue, Size Medium, 8 inch wheels