The Water Jacket (Aqua Jacket in Japan) is a Clothing-class piece of equipment found in Golden Sun. It is found in a treasure chest in the bottom-left room of Hammet Palace. As Clothing-class equipment, it can be equipped by all Adepts. The Water Jacket increases the wearer's defense by 30. Also, it increases the wearer's Mars resistance by 20 and Mercury resistance by 30. It can be bought for 3000 coins and sold for 2250 coins.