Under Armour Bucket Hat. With a traditional bucket fit for a relaxed feel & an extended brim for increased coverage, this UPF 50+ will protect your skin from the sun's harmful rays. Additionally, the ArmourVent technology delivers true breathability in a light, stretchy durable & fast-drying fabric. Featuring ISO-Chill, the instant cool that disperses your body heat, actually feeling cool on your skin and helping you stay at your working peak longer!