Our round Viking shield replica is made from 1/2" plywood and weighs 3 kgs.(6.5 lbs.):
Its total diameter is 55 cms. (22"), the steel buckle has a diameter of 13 cms (5"), including riveting rim it is 20 cms.(8"). The shield's rim is reinforced with a sturdy hand forged steel ring.
The shield is held with one hand on a metal grip and has a leather arm strap (see our left bottom photo).