The Gauntlets of the Old Gods are a reward for completing No One Escapes Cidhna Mine.
Wearing this piece of armor grants the following skill bonuses:
- Fortify Archery: 20 points
This means the gauntlets cannot be improved past flawless quality without boosting the Smithing skill over 100. This can be achieved by using enchanted items and/or blacksmithing potions to fortify Smithing.