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. Fit & Design: Short sleeve Collared 3-button placket Lightweight and breathable fabric 4-way stretch for full range of motion Technology: Moisture wicking Fast drying Additional Details: