The mesh section at the back of the Tonal Mesh Yankees Trucker Cap from New Era ensures good ventilation at all times, which will be a source of delight for more than just fans of the New York Yankees. The baseball cap has an opening at the back with a snapback closure so that the size can be adjusted to create a perfect fit and optimum comfort. The MLB trucker cap is 10.5 cm tall, whilst the pre-bent peak is 7 cm long.