Oakland A's Small Backpack by New Era - Never Used. This backpack is from the Oakland A's and is by New Era. It has never been used. This backpack is lightweight which makes it a great backpack for easy tote into a game or for any other use. Please view all pictures. Meaurements: 18" tall, 13" wide, 4" deep. - Measurements are of empty backpack. Inventory Control S5