The crown of 1 is specially designed for friends who like to sleep on hard beds. The patented Orthofoam spine block is naturally mildew-proof and bacteria-proof, preventing the mattress from producing odor or insects and mites. The upgraded version of Yalan Xinghai belongs to the basic model and has no effect.
2. The lines of the crown mattress are neat and orderly like waves, and the different soft and hard designs on both sides can meet the needs of different sleep comfort. The upgraded version of Yalan Xinghai is a flat design with low comfort.