This six-panel trucker cap with a mesh back will be a comfortable and classic choice for a hot day of service calls. One of our most popular hats! • Structured, mid-profile, six-panel cap • 47/25/28 cotton/polyester/nylon • Hard buckram front panels • Mesh back • Permacurv visor, matching under-visor • Plastic adjustable closure • 3-1/2" crown • Head circumference - 21 5/8" to 23 5/8"