Hybrid/composite construction with Fiber Reinforced Plastics significantly enhances the strength, ductility and durability of concrete columns. A composite column is proposed in which the filament-wound tubular shell is the pour form, protective jacket, confining member, and bi-directional external reinforcement. The tube may be a multi-layer angle-ply, or a normal-axial wound pipe. Longitudinal fibers serve as the flexural reinforcement, while hoop fibers provide confinement and shear strength. Analytical and experimental studies indicate higher compressive and flexural strengths as well as excellent pseudo-ductile characteristics. A new confinement model is proposed, since existing models are shown to be only suitable for confinement with transverse steel reinforcement. A parametric study evaluates the effect of jacket thickness and fiber orientation on the beam-column behavior of the composite system. Test results indicate that a fiberglass tube with 3 mm thickness can almost triple the strength of a standard concrete cylinder.