【3D Memory Foam & Cool-Touch Fabric】Crafted with 3D seamless memory foam and cool-touch fabric, YANIKY sun visor offers a premium, pressure-free fit. The fabric is infused with cooling technology, keeping you refreshed while blocking 99% of UV rays with its UPF 50+ triple-layer protection. 【Adjustable & Portable】 Equipped with a sliding buckle, this hat fits head sizes 50-63cm (19.7-24.8 inches). Its rollable design makes it easy to pack and carry, perfect for travel, beach trips, sports, or daily commutes. 【Ponytail-Friendly Open-Top Design】The open-top, headband-style design ensures excellent airflow and heat dissipation, making it ideal for ponytail wearers. It's lightweight, breathable, and won't flatten your hair, keeping you comfortable and stylish all day long. 【Stylish & Versatile for Every Occasion】Available in multiple colors, this sun hat for women combines fashion and functionality. Whether you're at the beach, hiking, running, tennis, cycling, jogging, golf or shopping, it's durable, easy to clean, and designed to elevate your outdoor look.