The heavy duty quad canes are made out of aluminum and have a large base and an offset handle. They have a lightweight design and low center of gravity, which combine for greater stability and balance Weight capacity: 500 pounds; Weight of cane is 4 pounds. Cane can adjust from 30.5″ to 39.5″ (Approximate user height: 4’11” – 6’4″) Cane has a 7/8″ diameter; Base size: 12.25″ x 8″