A Mail Cap is a Hat-class headwear available in both Golden Sun and Golden Sun: The Lost Age. It is sold in armor vendors at Kalay and Tolbi in Golden Sun and at Yallam in The Lost Age. This hat can be equipped on all Adepts in both games. It increases the equipped Adept's base Defense rating by 23 points. Its buy value is 2000 coins and its sell value is 1500 coins.
In Golden Sun when it can first be bought in Kalay, Mail Caps are okay upgrades to buy for Adepts equipped with Silver Circlets and anything below that, but are not substantial defense upgrades for Adepts equipped with Iron Helms. You should look into whether to buy Mail Caps and how many of them you should buy only after outfitting your party with other stronger equipment at the town's weapon and armor vendors.
In Golden Sun: The Lost Age, the Mail Cap becomes one of the many items that are sold in shops across the Great Eastern Sea and effectively become available for purchase all at the same time as soon as your party can start sailing the sea on the Lemurian Ship. The Mail Cap is one of the less worthy pieces of equipment that can be bought at this point because the two mage-style Adepts Jenna and Sheba will most likely be equipped with the Artifacts Nurse's Cap and Clarity Circlet, so the Mail Cap would only be a few Defense Points higher than those. The warrior-style adepts Felix and Piers will most likely be equipped with Bronze Helms, and while Mail Caps are somewhat substantial upgrades for them, the best thing you can do for them to upgrade their head equipment is to head to Champa, where the very strong Helm artifact Viking Helm can be easily found in a chest and the almost-as-practical Silver Helm can be bought for 3900 coins.
|General Headwear in Golden Sun|
|Leather Cap • Wooden Cap • Mail Cap • Ninja Hood • Lure Cap • Jeweled Crown • Prophet's Hat • Lucky Cap • Thunder Crown|
|General Headwear in Golden Sun: The Lost Age|
|Nurse's Cap • Thorn Crown • Otafuku Mask • Floating Hat • Hiotoko Mask • Crown of Glory • Alastor's Hood|