RGB Freight Trucker Hat - GR ROYGBIV.WORLD TRUCKER HAT • 100% polyester front • 100% polyester mesh back • Structured, 5-panel cap, high-profile • Adjustable plastic snap • One size fits most ALL SALES ARE FINAL.Size guide A (inches) B (inches) C (inches) D (inches) One size 24 - 26 6 3 8 ⅝