Buckle closure bamboo frame UV protection coating HD 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 relaxed UV Protection: Anti-glare TAC polarized lenses, resistant to high temperature and drop. like oversized sunglasses Bamboo 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.