▎ 摘　　要

NOVELTY - The jacket has a double-arm mechanism (200) comprising a sleeve filament casing (201). Two sides of a shirt filament casing (101) are sewed with the sleeve filament casing. The sleeve filament casing close to a bottom of one end of the shirt filament casing is sewed with a wearable filament casing (202). The shirt filament casing and the wearable filament casing comprise a first filament layer, a second filament layer and a third filament layer. The wearable filament casing comprises a first wearable layer, a second wearable layer and a third wearable layer. A bottom portion of the first filament layer is sewed with the second filament layer. A bottom portion of the second filament layer is sewed with the third filament layer. A bottom portion of the first wearable layer is sewed with the second wearable layer. A bottom portion of the second wearable layer is sewed with the third wearable layer. USE - Long service life graphene down jacket for use by people in cold area, and inspection staff. ADVANTAGE - The first filament layer and the third filament layer ensure the comfort and wind resistance of the shirt filament body and the warming cap when the user is worn, so as to ensure the basic warming ability of the down jacket. The first wearable layer is made of vinylon cloth material, and needs to stand for 24 hours. The graphene down coat includes long service life. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a long service life graphene down jacket. Body mechanism (100) Shirt filament casing (101) Thermal hat (102) Storage pocket (103) Hand-inserting pocket (104) First elastic band (105) Double-arm mechanism (200) Sleeve filament casing (201) Wearable filament casing (202) Second elastic band (203)