CafePress - World's Greatest Grandpa Cap - Baseball Cap with Adjustable Closure, Unique Printed Baseball Hat This baseball cap is made with unstructured 100% cotton. With an adjustable hook/loop tape closure that adjusts from 20" to 24", a crown measuring 3.25" this baseball cap is a sure fit. The brim is low sitting and the inside includes a sweatband to help wick sweat away from your brow on those sunny days on the golf course. Our baseball cap designs are professionally printed, so your unique design will look great and make someone smile with the funny, cute, vintage, or expressive artwork. Treat yourself, or make this baseball cap the perfect gift for Father's Day, Memorial Day, Christmas, birthdays, anniversaries, retirement, or for no reason at all! Spot clean with warm water and mild detergent, hang dry. IMPORTED. We offer 100% money back guarantee, so you can buy with confidence. Your satisfaction is our promise, and returns/exchanges are made easy.