Full Leather means that 100% of the upholstery material is genuine top grain leather, including the base, sides, and back of the furniture. No other materials are used.
Half Leather means that the furniture has leather only in areas that directly touch your body when sitting such as the seat cushions and armrests. Other portions of the item, usually the base, sides, and back, is upholstered in a synthetic material such as vinyl or PVC, which are artificial leathers.