Pearl cotton using high-pressure process of special processing, also known as spherical cotton, is the smallest molecule of all sponges, the highest resilience performance of a kind. Pearl cotton after compression, the texture is tightly arranged in a bead, with the use of the process, the internal stress of its pearl particles will be gradually released, with the more you use the more fluffy characteristics, so with pearl cotton processed fanny pack modeling plumpness is particularly good, smooth feel, warmth and comfort, and resilience is very resilient. But now pearl cotton is widely used in industrial production of sound insulation, heat insulation materials, agricultural thermal insulation materials, aquaculture floatation equipment, sporting goods protective pads, pearl cotton is also used in large quantities for handbags and bags elastic lining. Water work life-saving equipment, family, hotel floor decoration, padding, etc. PP cotton: also known as filler cotton, doll cotton, hollow cotton. The material is polyester staple fiber, mainly with universal fiber and hollow two kinds. As the chemical fiber material is not very breathable, the use of a long time is easy to deform into blocks, lack of elasticity, the pillow presents a high and low state, especially some of the small manufacturers of poor-quality cotton used for filling. Therefore, it is recommended that you buy toys and pillows when choosing the best pearl cotton, cheap fiber pillows are easy to deform. pp cotton is cheaper, the price of pearl cotton is more expensive. Pearl cotton softness is better than PP cotton, do pillow of course, but PP cotton is also good. Pearl cotton relative to the advantages of PP cotton is good elasticity, not lumpy and other advantages.