I’ve divided the essentials into casual and dress trousers with the idea being that casuals can take a little dirt. You might wear them with a jacket but they’ll be paired with a sweater or a polo more often than not.
-Khaki cotton drill. Gentleman’s jeans for weekend wear. Olive is another classic color.
-Cotton moleskin. Soft and warm trousers for the cold.
-Cords. In moss and mouse, for cool weather from Fall to Spring, with sweaters or odd jackets.
-Poplin. Spring casuals for golf and similar pursuits. Try a soft pink.
-Gray flannels. Every wardrobe needs at least two pair, in mid-gray and charcoal. Aficionados also like them in light gray for Spring (like the hatted fellow in the illustration) , and in weights from medium to heavy. As Alan Flusser wrote, “If you are considering a new sport jacket and are having difficulty visualizing it with a medium gray trouser, move on.”
-Fawn and cream flannels. A change of pace from gray.
-Gabardines. Silky smooth trousers are ideal for much of the year in California and similar climates. Wear them in cream, brown and olive.
-Tan cavalry twill. With a navy odd jacket it’s the English uniform.
-Linen. Linen breathes, so it’s a good choice for hot weather. Get the heaviest linen you can find, because heavier fabric will drape better and rumple rather than wrinkle. Think in terms of half a dozen pair in cream, tan, brown and mustard.
-Light gray and tan fresco trousers. More summer wear. Fresco doesn’t wrinkle like linen and it holds a crease. Wear them on unrumpled occasions with a tan or navy odd jacket.
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