 The addition of different materials in rotational molding process can decrease mechanical properties, especially impact strength. To address this issue, multi-layer structures of virgin polyethylene, PE, and banana fiber composites were prepared and studied for their influence on the performance of the final part. Cycle time was analyzed and improvements in Young's modulus of up to 13 percent were found, although at the expense of significant decreases in impact strength. The reduction in fiber size due to pulverization affected the rheological and mechanical behavior of the composite. Two-layer structures with up to 5 percent banana fiber have been produced, and neat polyethylene was added to the external layer to counteract reductions in mechanical properties for flexural elastic modulus and tensile strength, as well as impact behavior. This article was authored by Jake Kelly-Wally, Zyda Ortega, Mark McCourt, and others.