Poly/spandex blend ✅ SOFT AND FLEXIBLE: The SAAKA Hat is designed to be unstructured unlike most hats which are firm and stiff. Our hat is completely flexible and never feels hard while being worn. ✅ EXTREMELY LIGHTWEIGHT & BREATHABLE: Ultra light materials are used so you almost forget you're wearing this hat. ✅ KEEP YOUR VISION CLEAR: The inner band of our hat is a multi-layer dynamic system that continuously pulls moisture from your forehead for quick evaporation. ✅ MADE OF PREMIUM MATERIALS: Made from BAMBOO viscose and a high tech, poly/spandex microfiber. Reflective Logos to make it easier to be seen. ✅ PERFECT FOR ACTIVITIES: Great hat for running, golfing, fitness, tennis, working out and casual wear. SAAKA Featherlight Sports Hat. Premium Packaging. Lightweight Quick Drying. Running Tennis & Golf Cap for Women & Girls - B8EI1VX9B