Buckle closurebamboo frameUV protection coatingHD polarized lenses are better than standard lenses Polarization increases color perception and reduces glare reflected by mirrors, shiny or polished materials, or any other type of reflection of sunlight. You'll feel like your eyes are forever relaxed because you won't be squinting anymore Whether you're fishing, walking in the park or paddle surfing, you won't feel tired at the end of the day because your eyes will be more relaxedUV Protection: Anti-glare TAC polarized lenses, resistant to high temperature and drop. like oversized sunglassesBamboo Fiber Sweatband: Skin-friendly, soft and fresh, comfortable, breathable and absorbent. 80% bamboo fiber, 20% polyester.Stylish Protection: Protects eyes from sunlight and glare. This solar hat is great for outdoor, jogging, golf, tennis, beach, fishing, sailing, boating, SUP, biking, hiking, walking, camping, etc. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store