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.

Health Latex:

Made from the sap of rubber trees, refined through processes such as foaming, molding, demolding, and cleaning. It offers excellent elasticity, evenly distributes pressure, enhances comfort, and is healthy and eco-friendly. The breathable and anti-mite hypoallergenic properties of latex help eliminate bacterial breeding grounds, protect delicate skin, and are suitable for people prone to allergies.

Natural Wool:

Wool is soft and elastic, renowned for its comfortable natural style. It offers advantages such as fluffiness, anti-static properties, resistance to clumping, and moisture-wicking capabilities. It keeps you warm in winter, absorbs moisture, and stays breathable in summer, creating a comfortable sleep environment all night long.

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.

Double Sided Sleeping Design:


Designed to accommodate different firmness preferences, allowing you to flip the mattress for two distinct sleep experiences. Suitable for people of varying body weights, it provides appropriate support whether lying flat or on your side.

Thickness: 27cm