feature: 3-dimesional hollow polyester fiber was a new product developed in the last century which is with lots of crimps and hollows. the helical script is completed with the fsf axes except the parallel direction. the script is 360 degree helical that makes polyester fiber staple dimensionality, so that stale script, high bulkiness and hollow polyester makes the polyester fiber the most thermal property and hydrophobic. soft, live liveliness, slight, sanitation and no harmful substance resorting or diffusing, corrosion proof and none bitten by insect neither milden and rot. it will be replace the man made polyester and nature polyester. it can be used to make stuffed toy, pillow and cushion, mattress, bedding, and ski jacket, dust coat and sofa cushion etc. it is a reliable stuffing material.