Under Armour - Iso-Chill Armourvent Bucket Hat. Color Black/Castlerock. On sale for $27.77. MSRP $35.00.. +3 colors/patternsBrand NameUnder ArmourProduct NameIso-Chill Armourvent Bucket HatColorBlack/CastlerockPrice$27.77MSRP: $35.00Rating