The 'Parcher' Shoulder Pad is a Body added into the game during the Archery Tournament (Update).
The body appears to be a man wearing a short, green hooded cloak over an orange and yellow tunic with a belt. On his left shoulder is a leather pauldron fastened by black straps. The right hand has a green glove which leaves the thumb and pinkie finger exposed, while the left arm has the sleeves rolled up to the elbow and has bands on the wrist and forearm which meet inbetween at the back.
The Body Increases the Damage of all Bows by 10% and it gives you 7% agility.
A full list of Bows is found here.