Cotton,Mesh Hook and Loop closure Various style and colors: Classic All Cotton and Mesh Baseball cap with Ponytail Hole, Glitter Shinning Pony Caps, Tie Dye Printed Hat for women ,Criss Cross back womens hat, various color for your choose.You will find what you love. Top quality: Mesh/trucker caps are 65% cotton 35% polyester. Lightweight super soft finish. Exceptional quality.. Do not hesitate to buy our products. GREAT FIT: One size. The inner circumference of this hat measures approximately 22 inches, but it can adjust to measure anywhere between 20 and 40 inches, fitting several various head sizes. Easy to wear comfortably with a pony tail or messy bun. Ponytail Design: slot size 3.0" x .5";Simply pull hair through slot and adjust to desired style,perfect for pulling your messy bun or high ponytail through. Fabulous gift idea: Perfect for a day in sun, visor peak bill for UV protection from the sun,Time saving and convenient design for leisure. Runners, golfers, tennis players, and any indoor or outdoor activities. Great for all seasons and provides shade while running quick errands, marathons, enjoying outdoor activities with our ponytail hat