Hign density slow rebound memory foam pillow

详情

Structure
1)Knitting fabric outside cover
2)cotton inner cover
3)D*0 memory foam
4)zip
5)PVC bag

Functure:Like other types of foam, memory foam is made of vast numbers of polyurethane cells filled with air. In traditional mattresses and foam pillows, these cells hold air inside and remember their shapes even though they are flexible, so they spring back to their original shapes when not in use. Memory foam, however, is visco-elastic and has two important qualities that make it different: holes in its cells and temperature sensitivity. This means that when a person rests on a memory foam pillow, the foam cells will collapse where pressure is increased, pushing their air down into other cells and essentially creating a depression along the line of the person's head. Memory foam also reacts to heat, which can make the cells more flexible when they encounter the high body temperature of the user.