Latex is rather durable, so it resists premature wear better than many synthetic foams. It doesn't soften from body heat as much as memory foam, so it's also less likely to develop deep surface impressions. That said, any type of mattress eventually softens with age. The rate and degree of softening depends on the material, a sleeper's body weight, the presence of co-sleepers, and how well a person cares for their mattress.