... , two head restback,with handle bar. aluminium alloy plug, rotation seat Key Specification-Materials: iron, PP, PVC,foam-easy to assamble-Designed ... use,no matter what fitness level.3.Four or Six iron springs to support your body.4.When lying down,it ... : 7.0kgs/7.5KGS RED AD trainer, TOTAL CORE,aliminium alloy