Conforms to ergonomics,cup style,light weight,supple sense,comfortable to use. Conforms to ergonomics,cup style,light weight,supple sense,comfortable to use. PACKINGPCS/CTNCARTON SIZEG.W/N.Wcolor box40064.5x30x31.5cm6/5KGDouble-blister9675x50x40cm10/8KG Dust Mask