Sunday Afternoons hats are designed with one specific purpose; complete 360 degree solar coverage. Their Adventure hat has been awarded an unprecedented 13-point utility patent for sun protection. The utilization of ultra lightweight sun protection fabric allows their hats to feel nearly weightless. The Adventure Hat remains cool and comfortable all day long regardless your activity. You can feel confident knowing your nose, cheeks, lips, eyes, ears, and neck have an excellent UV shield. Sunday Afternoons hats are made from Supplex fabric with CoolMax sweatbands. At only 3 ounces, you can’t get more sun protection (50 UPF) per ounce than this!