Norrona /29 Mesh Flexfit cap is the perfect cap for outdoor activities in the sun and for everyday use. Norrona /29 Mesh Flexfit cap is the perfect cap for outdoor activities in the sun and for everyday use. This cap's main fabric is 100% organic Cotton. The back half of the cap is made with a Polyester/Elastane mesh construction. The Cotton Norrona usesd is 100% organic GOTS certified Cotton. Norrona uses organic Cotton cotton as the main fabric because of its breathability, sun protection, and comfort on the skin. On the back of the cap Norrona usesd a 98% recycled Polyester 2% Elastane mesh lining that provides excellent ventilation. In addition, the flexfit band around the circumference of the cap will guarantee a more customized fit, and help prevent sweat droplets from blocking your vision. This cap has a regular fit.