Shoulder season is tough for the man who wants to wear a jacket in a casual fabric (i.e., one with real surface texture). In cold weather, tweed, woollen flannel, lambswool, Shetland, and the hairier worsted flannels are no-brainers; and there are corduroy jackets for those who like them. In hot weather, we have linen, cotton poplin, seersucker, and lightweight high-twists that get the casualizing effects of wrinkles. But what about shoulder season? This is the perfect time for smooth worsteds, but what's a guy to do who works in an environment where a jacket in smooth worsted is too much for everyday wear? Some people say the hairier kinds of hopsack, others say wool-linen blends to get the casual effect of wrinkles, and others say worsted flannel. I guess the more burlapy 15 oz frescos and such might be good too. I've toyed with the idea of something funky, like a lighter cavalry twill in smooth tricotene/elastique weave: I figure the ribs will give it visible texture. Many iGents seeking casualness in shoulder season go for smoother fabrics with bolder patterns. But I like to keep it toned-down, so I avoid bold patterns unless they're on really textured fabrics (cold-weather hairy fabrics or linen). B&W glen plaid, B&W herringbone. houndstooth, or single-windowpane in muted color are about the boldest I'll go unless it's on tweed or the like. So what's a guy to do who wants casual fabrics for jackets in shoulder season, and isn't keen on bold patterns? Any advice much appreciated.