Buckle closureBamboo frameUV Protection CoatingHD polarized lenses are better than ordinary lenses! Polarization increases color perception and reduces glare reflected by mirrors, shiny or polished materials, or any other type of sunlight reflection. You will feel that your eyes are relaxed forever, as you won't have to squint anymore! Whether you are fishing, walking in the park, or paddling and surfing, you won't feel tired at the end of the day because your eyes will be more relaxed.UV Protection: Anti-glare resistant TAC polarized lenses, resistant to high temperatures and drops. Works like large sunglasses.Bamboo Fiber Sweatband: Skin-friendly, soft and fresh, comfortable, breathable, and absorbent. 80% bamboo fiber, 20% polyester.Stylish Protection: Protects your eyes from sunlight and glare. This sun hat is perfect for outdoor use, jogging, golf, tennis, beach, fishing, sailing, boating, SUP, cycling, hiking, walking, camping, etc.