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GrandRest's I-Gel Technology
COOLING GEL MEMORYFOAM
GrandRest's memory foam mattress incorporates I-GEL technology to implement cooling technology that allows the mattress to continuously release heat.
Learn More
COMMON : Mattress in a Box
What is a mattress in a box? A mattress in a box is a type of mattress that is compressed, rolled, and packed in a small box for easy shipping and delivery. These types of mattresses hav...
COMMON : Correlation between body pressure dispersion and sleep
What are the conditions for a healthy sleep?When lying on a flat surface such as the floor or a spring mattress, a gap is created between the curved body and the flat surface. The pressure applied ...
Memory Foam: Why is memory foam popular? Part 1
Western cultures, including North America, have been interested in quality sleep and more comfortable sleep, and have continuously developed mattresses through research. In particular, in the las...