Best Selling Hat - Scala 100% Cotton Sun Hat - Rainbow of Colors. You'll look great in this Packable Sun Hat. The hat has a 3" brim turned-up at the edge. It is fully lined and has an adjustable inner draw string. One Size will fit. Rated Sun Protection Factor (SPF) 50+ - the highest rating given to a headwear product. SPF 50+ provides the best sun protection possible. Full range of colors.