Abstract: Reinforced polymer composites having a uniform mixture of reinforcing fibers having a polymodal length distribution and having polymer particulates are provided exhibiting a good balance of impact strength and processability/formability. The composites are prepared by forming a dilute aqueous slurry of a solid heat-fusible organic polymer and a reinforcing material having a polymodal length distribution, agitating the slurry and then dewatering the slurry to provide a mat of thermoplastic polymer particles and reinforcing fiber. The mat is dried and then stamped under pressure and heat to consolidate the thermoplastic material and form a sheet-like composite structure.