The San Francisco 49ers 2025 Sideline Hot Weather Historic 39THIRTY Stretch Fit features a sewn-down silicone 49ers historic logo patch at the front panels with the Official NFL Shield logo at the rear. The cap has a water-repellent quill tech fabrication throughout, with an insulated crown and quick-dry cushioned sweatband. The undervisor is accented with a silicone transfer in the teams colors.