Abstract: A tricycle having both front and rear wheel drives, for hand and foot motion respectively, includes a front wheel drive assembly that is adjustable with respect to the frame of the tricycle to position a hand crank in the optimum position for almost any user. A seat assembly is also adjustable with respect to the frame, and a rear wheel drive assembly is also adjustable with respect to the frame to make the tricycle adaptable to any handicapped child or individual, to give him the maximum use of his limbs; to exercise his limbs in the best therapeutic manner; and to allow for growth and changes and improvements in this muscular coordination.