Please recommend some slacks that look neat under a blazer for commuting.

Here are long slacks that neatly match a formal blazer for commuting. The AMOMENTO pair has a tapered fit in a wool-cashmere blend, RECTO features a flare fit that spreads naturally toward the hem, and MARGESHERWOOD comes in a stripe pattern with a slim straight silhouette.

Here is a refined selection of commuting slacks containing wool. LOW CLASSIC and RECTO feature creased 100% wool straight silhouettes, while AMOMENTO offers a relaxed tapered fit blending wool with cashmere.

Here are straight-fit pants made of wool. RECTO and LOW CLASSIC are formal 100% wool trousers with front and back creases, while AMOMENTO is a straight fit featuring a banded waist and drawstring.