Product Overview: Developed in collaboration with Bryson DeChambeau. This Science Polo is the perfect combination of brains and braun. MATTR (Materials, Technology & Research) is the performance fabric designed for the highest level of comfort no matter the climate condition. Featuring technical moisture-wicking, fast-drying fabric, with breathable, four-way stretch and a lightweight feel, this material will give you everything needed to go low. Performance MATTRs to Bryson, and it MATTRs to us! Features: DyCELL Moisture Wicking MATTR Fabric 92% polyester, 8% elastane