There are many company's out there which manufacture parachutes/canopies for skydiving, base jumping, speed flying..... Though in order to use one without seriously hurting yourself you would need to start out with a skydive license
An apparatus used to retard free fall from an aircraft, consisting of a light, usually hemispherical canopy attached by cords to a harness and worn or stored folded until deployed in descent.
You're doing heavy drops, correct? If you drop personnel one parachute (not counting the reserve--you never want to be under both at the same time!) is all you need anyway, and two parachutes could...