Get into the game without losing your cool. Spacer Mesh panels on hat back allow cooling ventilation on even the warmest days.Fabric: 100% cotton in front two panels; 100% polyester Spacer Mesh in mid and back panelsStructure: StructuredProfile: MidClosure: Stretch fit39THIRTY FIT: Features a casual look with a stretch-to-fit styling a contoured crown and precurved visor. Structured for stability with a classic cap shape. New Era products may not be resold without embellishment.