The New Era 9FORTY is a structured, adjustable replica of the MLB® on-field cap with an embroidered Washington Nationals team logo on the front panel and stitched New Era® flag at wearer's left side. The six panel construction features breathable eyelets with a curved visor and button at top. Open back has an adjustable Velcro strap featuring the team name.Hat Details:- Made of 100% polyester- 3D logo embroidered at the front- New Era flag embroidered on the left- Velcro back with team name and logo New Era 9FORTY Sizing Info:Adjustable - Velcro back allows most sizes to fits comfortably. This hat can fit 53cm to 61cm comfortably. That including kids 10 and up as well as XL size adult heads.