Size: One size fits most / Adjustable hook&loop back
Head measurement: 56 cm, 22", Size 7 ~ 59 cm, 23-1/4", Size 7-3/8) Brim: 2-3/4" Height: 5"
Ponytail cut out compartment: 3" x 1/2" - simply rubber band your hair up and slide in, adjust and tighten
Baseball Cap with Ponytail Hole: Love high ponytail, love sunshine! Just simply pull your ponytail through back slot and you're ready on the go! This baseball cap keep hair off your neck and provide sun shade, great for running quick errands, marathons, walking, cycling, playing golf, camping, boating, etc.