Under Armour - Iso-Chill Armourvent Bucket Hat. Color Black/Castlerock. On sale for $28.37. MSRP $35.00.. +3 colors/patternsBrand NameUnder ArmourProduct NameIso-Chill Armourvent Bucket HatColorBlack/CastlerockPrice$28.37MSRP: $35.00Rating