ACTIVE TEE: made with 90% Recycled Polyester / 10% Spandex Performance Jersey ACTIVE JERSEY: now made with recycled polyester from REPREVE - created from recycled plastic bottles and blended with spandex. FLATROCK SEAMS: made with soft sewing thread for duribility. Rib trimmed neckline, Inside printed back neck label for comfort, self-fabric back neck tape, cord locker loop. DESIGN: Additional Life is Good reflective heat transfer on back neck. Hidden "Powered By Optimism" message on inside hem. Special hang tag made from recycled paper, calling out specific technical attributes and properties. This Active Tee moves with you, not against you. With tech to keep you dry, 50+ UPF, and a finish to help prevent odor, this ultra-comfy tee is designed with 90% recycled polyester-based fabric from REPREVE, you can feel good knowing that this added sustainability is a small step toward helping save the planet.