Men's Summer Newsboy Flat Ivy Hat With Summer Low Cut Sock. MATERIAL-Made of 100% Polyester. Polyester fabrics are extremely strong. And it retains its shape and is good for harsh climates. Size- Small(56CM),Medium(57CM),Large(58CM),X-Large(59CM) (Please see product description for more detail of size measurements) FEATURES- It is perfect for the warmer seasons. This driving cap features a breathable, light weight and durable qualities. And it has soft inner lining will keep the cap cool and comfortable in the warmest of weather. IT IS PERFECT FOR THE WARMER SEASONS ! -This summer ivy gives you more airflow for a cooler feel during spring and summer heat waves. Hat will make you look and feel good all day long.