Lanzom Unisex Breathable Run Cap Outdoor Sports Hat Lightweight Quick Dry Sun Cap Material: Lightweight & quick drying polyester Size:One size fits most by 55-60cm head girth with velcro closure at back Suitable for male and female Ideal for runners, golfers, tennis players, and any indoor or outdoor activities Quick-dry and ultra-lightweight polyester fabric, super breathable and comfortable with cotton sweatband.