There are a variety of warm-weather caps, hats, and liners available to choose from, including: * Hardhat liners: These liners are designed to be worn under a hardhat to provide additional protection and comfort. They are typically made of moisture-wicking materials to keep you cool and dry. * Wide-brim hats: These hats offer excellent sun protection for your face, neck, and ears. They are ideal for working outdoors in direct sunlight. * Sun visors: Sun visors are a great option for those who want to protect their face from the sun without having to wear a full hat. They are lightweight and easy to wear. * Cooling headwear: Cooling headwear is made with materials that help to keep you cool and comfortable. This type of headwear is often worn by athletes or workers who are exposed to high temperatures.