Hemptopia Biege Men's Hemp Cap Baseball Small / Medium Flex Fit These hemp caps were designed for durability and are made with 67% hemp, 30% cotton, and 3% polyurethane (used in elastic band). They are comfortable, durable and block 95% of ultraviolet rays while keeping you cool and dry under the sun. The hemp material wicks away moisture and has antimicrobial properties that make them resistant to mold and mildew. These hemp hats are environmentally friendly and are made chemical free. They function and look great for outdoor activities under the sun. These hemp caps are custom built and made to last. These are a FlexFit meaning they have an elastic band to allow for a comfortable fit. Size information: Small / Medium: Hat Size: 6 3/4 - 7 1/4 - Head Circumference: 21 1/4" - 22 3/4"