Armor

Light Armor

10 aquills x quality
This gives you its quality as an assistance bonus to defending against attacks.

Medium Armor

25 aquills x quality
This gives you half your Stamina rounded down as damage reduction, but disadvantage on Stealth rolls.

Heavy Armor

30 aquills x quality
This gives you half your Stamina rounded up as damage reduction but disadvantage on Stealth and Athletics rolls.

Plate Armor

40 aquills x quality
This gives you 1 damage reduction and allows you to use Stamina in place of Agility for your defense, representing your shrugging off attacks instead of parrying or dodging them. It gives you disadvantage on rolls pertaining to Stealth and Athletics.