Synthetic leather usually PVC (Polyvinyl Chloride) or PU (Poly Urethane)..
If you have not used till now, leatherite is the most recommended. Fabric upholstery on sofa requires more maintenance. Since they are breathable, moisture absoptions is more and can become stale with use. Leatherite can be polished from time to time with special cleaners and made good to use.
Contemporary furniture are made more simplistic in designs. The industry has shed those bulky designs of yester years to a more minimalistic silhouette that looks more appealing and save more space. Material of construction for modern furniture ranges from faux wood and rubberwood to particleboard and steel. Ofcourse leatherite has taken over genuine leather for more durability reasons.