Shell armour
From Dragon Quest Wiki
The shell armour is a recurring suit of armor in the series. It is made out of armoured shells connected with chains.
Appearances
Dragon Quest III
The shell armour has a defence bonus of +16. It can be equipped by the Hero, warriors, priests, merchants, and sages. It can be purchased with 300 gold coins at the Weapon & Armour shop in Romaria, and sold for 225.
Dragon Quest VII
The shell armour has a defence bonus of +18, but reduces style by 25. It can be equipped by the Hero, Kiefer, Sir Mervyn, and Aishe. It can be purchased from Frobisher for 880 gold and sold for 440.