which had to be individually riveted together by hand. As a result, mail was very expensive in early medieval Europe, and would likely have been worn by men of status and wealth. Hjortspring boat contained several incomplete suits of mail. The mail worn by Vikings was almost certainly the "four-on-one" type, where four solid (punched or riveted) rings are connected by a single riveted ring. Mail of this type is known as a byrnie from Old Norse brynja. Given scarcity of archeological evidence for Viking armor and the fact that Vikings on a raid tried to avoid pitched battles, it's possible that mail was primarily worn only by the professional warriors going into battle, such as the Great Heathen Army of the mid-9th century in England or at Harald Hardrada's invasion of Northumbria at the Battle of Fulford in 1066, and wealthy nobles. Lamellar More than 30 lamellae (individual plates for lamellar armour) were found in Birka, Sweden, in 1877, 1934 and 1998–2000. They were dated to the same approximate period as the Gjermundbu mailshirt (900‒950) and may be evidence that some Vikings wore this armour, which is a series of small iron plates laced together or sewed to a stout fabric or leather cats shirt. There is considerable debate however as to whether the lamellae in question were in the possession of a Scandinavian resident or a foreign mercenary. Cloth and leather Quilted cloth (a gambeson) is conjectured as possible options for lower-status Viking warriors, though no reference to such are known from the sagas. Such materials survive poorly in graves, and no archaeological finds have been made. Some runestones depict what appears to be armour which is likely not chain mail. The armour in question may have been the lamellar armour mentioned above, or may not have been armour at all. Several layers of stout linen or hemp canvas would provide a good level of protection, at reasonable expense, as would winter clothing made from thick woollen cloth. Practical experience with maille also suggests an undergarment of some sort would have been worn between the maille and the regular tunic, to protect the latter from dirt and excessive wear, but the descriptions of the effect of axes in the Sagas indicate such garments were lightly padded if at all. Leather was far pricier during the period than today and thus less affordable for the casual warrior. In the