* The high-capacity 77% high carbon steel provides longer product life cycle.
* All springs are kept to the maximum 190 kgf/mm².
* The evaporative formaldehyde of product is only at 0.01 mg/m³ and TVOC at 0.005 mg/m³.

* The high- carbon steel's springs, coupled with the "steel mesh", helps to support the head/spinal shape, and relaxes the body.
* The upper and bottom parts of product are in green rubber, which helps to relax the muscle and joint tension, with pure Tencel adopted as the mattress's surface fabric.