Abstract: A massage roller includes an outer massage wheel and an inner support, wherein the outer massage wheel is sleeved on the inner support and has a spine groove for protecting a spine of a user, the outer massage wheel has an inner circumferential engaging surface, the inner support has an outer circumferential mating surface, wherein the inner circumferential engaging surface is attached and engaged with the outer circumferential mating surface of the inner support without a glue applied between the outer massage wheel and the inner support.

Abstract: The present invention discloses a warp-knitted fabric of filament and short staple composite yarn and a preparation method thereof. The warp-knitted fabric of filament and short staple composite yarn is prepared by the corresponding preparation method for the warp-knitted fabric of filament and short staple composite yarn. The preparation method for the warp-knitted fabric of filament and short staple composite yarn has excellent weavability, and can effectively prepare the warp-knitted fabric which is high in size stability, is soft, has high elasticity, is wrinkle-resistant and has an excellent hand feeling and comfort. Moreover, in the preparation method, soluble fiber filaments can be added to prepare a warp-knitted fabric or a 3D interval warp-knitted fabric which is partially or entirely formed by 100% short staple yarns; and low-melting-point filaments can also be added to prepare a warp-knitted fabric which can be randomly cut and has no edge curling variation.