Living in a colorful city, in addition to enjoying high-quality life, Serta also brings you high-quality sleep. The Cosmopolitan series uses 3 core technologies to make you feel at your best every day.

Mira Coil System:
• Serta’s patented spring technology, using refined “high-carbon manganese steel” with a seamless, Z-shaped continuous spring structure.
• Crafted from a single high-purity steel wire, it closely conforms to the spine, providing firm, uniform, and body-contouring support.

Best Edge Reinforcement System:


Enhances edge support, prevents mattress sagging at the edges, and significantly increases the usable surface area of the mattress.

Comfort Quilt:


A layer of soft fibers quilted with wave-patterned sponge placed on the mattress surface, distributing body weight evenly for more stable sleep, offering greater body conformity and enhanced comfort.

Comfort Foam:


Made from foamed resin through multiple customized processes, it enhances sponge comfort and pressure relief, with excellent resilience, body conformity, and stress release.

Skin-Friendly Knitted Fabric:


The mattress uses skin-friendly knitted fabric, which feels exceptionally soft and smooth. The high-thread-count knitting process creates a premium satin-like sheen, providing a silky experience.

Graphite Memory Foam:
With a stable carbon atom structure and even heat distribution, graphite memory foam combines the body-contouring and pressure-relieving properties of traditional memory foam.

Single-sided flip-free design

There is no need to turn the mattress over regularly, making it easy to maintain.

Thickness: 27cm