The cloak made from the wing leather of a green dragon is a sturdy and protective garment, providing an extra 1 ac to its wearer. Due to the tough and durable nature of the green dragon's wing leather, the cloak offers resistance to piercing damage. The green hue of the leather also provides natural camouflage in forest environments, granting the wearer advantage on stealth checks made to hide in such settings.

However, the weight of the cloak makes it cumbersome to wear and can impede movement, resulting in disadvantage on Dexterity (Acrobatics) checks. 

Notes: Bonus: Armor Class, Disadvantage: Dexterity Ability Checks, Advantage: Stealth, Resistance: Piercing, Warding, Outerwear