Keep him looking and playing his best. MATTR performance fabric delivers all-day comfort in any climate with breathable, fast-drying, and moisture-wicking technology. Lightweight with 4-way stretch, it keeps up with his game. Made with at least 90% recycled materials. 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.