This project focuses on designing a modular resistance therapy pool that creates a controlled current for swimmers to move against. The goal is to develop a system that can be installed both indoors and outdoors while remaining modular enough to be transported on standard pallets and assembled on site. The design must balance structural strength, portability, manufacturability, and ease of assembly. The process began with 3D CAD modeling to create a concept that met sponsor expectations. The initial focus was on designing the wall panels, ensuring they could withstand hydrostatic pressure while remaining practical to manufacture. Reinforcement strategies were incorporated to limit deflection and maintain rigidity. After establishing a stable wall configuration, attention shifted to the floor panels to ensure proper load distribution and seamless integration with the walls. Connection methods and modular interfaces were carefully considered to keep assembly straightforward while maintaining structural integrity. The final design uses a panel-based system that allows the pool to be assembled, disassembled, and transported efficiently. Instead of building a small functional prototype, a detailed 3D printed model was created to showcase the complete pool layout and features. This model clearly represents the full-scale design, including panel geometry, modular connections, and overall structural organization.