Human Flesh is a set of leather armor, it offers an armor class bonus of 7 and against stabbing and slashing attacks, it has +2 armor class penalty, it offers the same amount of protection as Leather Armor +1.
This is a tunic made from the badly sewn together human flesh that you took from the Tanner's house in the Bridge District. If completed it may make serviceable armor, albeit only the most evil of humans could wear such a vile item.
Human Flesh +5 is a set of leather armor, it offers an armor class bonus of 3 (5 vs piercing and missile), a +4 bonus to Saving Throws, +20% bonus to Magic Resistance and +20% bonus to Move Silently. It can only be used by evil characters.