Prevent hot heat waves from making direct contact with your skin or face with our range of straw hats, lifeguard hats, etc. GAP is an American clothing brand that has its presence known worldwide. They are known for their clothing and accessories retailing. This store was formed in 1969. Green is the color of nature and life. We have GAP Green Hats & Caps for men available in the most common fabrics like Knit Fabric and Cotton. Pick the right one for your needs.