Today the term poplin refers to the weave of the fabric. Poplin is a plain weave cotton fabric with very fine horizontal “ribs,” resulting in a crisp, strong fabric with a silky, lustrous surface.

Enter light-as-air poplin pants. Backed by brands like the Row and Toteme, they bring an elevated edge to warm-weather style, ...

Lululemon’s Relaxed-Fit Cotton-Blend Poplin. Right now, the boxy button-down is 30 percent off, lowering the price from $98 to under $70. Gelber says the slightly cropped silhouette is long ...