Textile using a flat multilobar cross-section fiber

The present invention provides the following: a textile that is a light-weight thin fabric and has high strength, low air permeability and excellent glossiness; a sewn product; and a down shell and a down jacket. More specifically, the present invention provides the following: a textile that can be used as appropriate for an outer fabric for sports and casual wear or ladies and men's clothing, represented by down jackets, windbreakers, golf wear and rain wear; a sewn product using the textile for at least a portion thereof; and a down shell and a down jacket using the textile for at least a portion thereof. This textile is subjected to calendering on one or both sides, and with respect to polyamide fibers after calendering, single fiber fineness is 0.5-2.5 dtex and total fiber fineness is 5-50 dtex. The single fibers have a flat multilobar cross-sectional shape having 6-10 lobe parts. The textile is constituted by warp and/or weft of polyamide fibers having a flatness (W) (α/β)=1.5-3, and the cover factor is 1200-2500.