The objective of this project was to improve the thermoregulatory properties of a sports product apparel item that is used for a specific sport or activity. After examining a tennis skirt baseline garment and its construction, prototyping was used to explore various solutions such as venting, pleats, and mesh in order to improve evaporation and circulation of air. Deliverables included a final prototype, technical flats, seam callouts, and a presentation for critique.