Show your young fan some love for their favorite MLB team by grabbing them this Seattle Mariners 2025 MLB Diamond Hero Edition 9FIFTY Snapback Hat. The 9FIFTY is New Era's classic snapback style and features the same shape as the 59FIFTY but has an open back and an adjustable snapback closure. The team logo is embroidered with raised details on the front panels and has a contrast-color undervisor. This high-crown, structured-fit cap is made of 100% polyester, is one size fits most, and is an excellent choice for your young baseball fan.