This project explores the design of a barefoot inspired outdoor performance sandal for running and hiking. Grounded in barefoot footwear design, the objective was to merge biomechanics and natural gait principles minimal stack height, flexibility, and anatomically contoured footbeds with the demands of rugged terrain. Research included user studies, gait observation, and benchmarking traditional fisherman and modern outdoor sandals, revealing needs for traction and drainage systems, debris resistance, comfort, and water adaptability. An iterative prototyping approach guided development, combining evidence based decisions with hands on testing. Strap placement was refined through paper taping, protective forms through clay modeling, and proportions through sketch iterations. Traction patterns were developed in CAD and validated using 3D printed lug geometries. Parallel upper mockups tested fit, adjustability, and breathability. The final concept balances openness with adaptive protection, supporting natural movement while ensuring stability across varied outdoor conditions, and establishes a foundation for future material exploration and product refinement and innovation pathways.