ROCKBROS fishing hat for men This sun hat is made of 100% high quality polyester and UPF 50+ breathable material that protects you from 100% harmful UV rays. The wide visor can cover your neck and shoulders well. Sun hat design a detachable top that we can take off in high temperatures. The mesh layer design can greatly improve the breathing and airflow speed. You feel more breathable and cooler. Absolute UV400 Protection The material is cool to the touch and can effectively block ultraviolet rays. The extended brim offers more protection and prevents sunburn on the face. Ultra Lightweight Only 145g. You can take this hat with you anytime, anywhere. This hat is very light and can be easily folded and put into any handbag or rucksack. More Features Sun Protection Removable Top Design Multiple Wearing Options Adjustable Size System Ultra Lightweight Water Repellent