Under Armour - Iso-Chill Armourvent Bucket Hat. Color Castlerock/Black. On sale for $27.74. MSRP $35.00.. Add to favorites. 0 people have favorited this+3 colors/patternsBrand NameUnder ArmourProduct NameIso-Chill Armourvent Bucket HatColorCastlerock/BlackPrice$27.74MSRP: $35.00Rating