Pillows can be made with cowhide on both sides or just one side. They are typically described as "one-sided" or "two-sided". While cowhide products may have natural marks and imperfections from the animal skin, these are not defects. Pillows are available in standard sizes of 15-16 inches and 19-20 inches when unstuffed, though stuffing can decrease the length by 2-3 inches.