How I tested the Serta iSeries 2.0 Hybrid mattress | My experience with the ... standard (1000 series), enhanced (2000 series) and ultimate (3000 series). All three levels have the same basic ...

Serta mattresses are available in a variety of models, features and types, including innerspring, memory foam and hybrid ... iComfort, iSeries and Mattress in a Box. Serta mattresses cost between ...