Moisture-wicking Technology: HeiQ for quick drying Flexible Design: 4-Way ULTRA STRETCH construction Sun Protection: UPF 50+ to shield from harmful rays Presenting CoolNet UV+ , the next-gen UV sun protection from Buff. This multifunctional headwear is uniquely crafted with 95% recycled REPREVE Performance Microfiber and HeiQ moisture-wicking tech, pulling sweat away from your skin and keeping you cool, light, and comfortable. Engineered with 4-Way ULTRA STRETCH construction, it offers UPF 50+ sun protection, safeguarding you from harmful rays and allowing you to enjoy the outdoors longer.