Jerkin

A Jerkin is a common Robe-class bodywear available throughout the.

In and
In Golden Sun when Jerkins can first be bought in Kalay, they can be good buys even if your mage-style Adepts Ivan and Mia are equipped with the likes of Adept's Clothes, as well as the Fur Coat and the China Dress. Don't be too hasty in buying them, though, because the strong Clothing Artifact Water Jacket can be easily fetched in the nearby Hammet Palace in Kalay. They are still sold at Tolbi.

In Golden Sun: The Lost Age, Jerkins are not really worth your money to buy: as soon as you get the Lemurian Ship and are able to start sailing the Great Eastern Sea, Jerkins can be bought in the armor vendor at Yallam, and they do have more defense than the equipment Jenna and Sheba could be currently wearing, such as Adept's Clothes and the Full Metal Vest. However, an even stronger piece of common bodywear that can be equipped on the two girls is available for buying in the Great Eastern Sea: the Silver Vests that are sold at Izumo. Also be aware that a far superior Robe Artifact, the Blessed Robe, can be bought at the same time at the general vendor at Champa, so you would ideally buy that first and then consider a Silver Vest or two, without any consideration paid to any Jerkin.

In
In Golden Sun: Dark Dawn, Jerkins do provide a good Defensive increase over the bodywear Karis, Rief, and Amiti would be wearing by the time Te Rya Village is reached. Once reaching Morgal, however, Jerkins can be quickly replaced by the Silver Vest found in Port Rago, as well as the various Artifacts found in the region. Jerkins are also sold at Belinsk.

Etymology
A jerkin is a piece of men's clothing worn first worn in the 16th century in Medieval Europe. It is a close-fitting, often sleeveless leather jacket worn over a doublet.