Few items in a guy's wardrobe feel as effortlessly elevated as a cashmere sweater. No shade to wool, of course—a chunky cable-knit or fine merino turtleneck are essential in their own right.

But yesterday, all the pieces were added to the brand’s Sleep Week sale, where everything is 20 percent off. The line includes all sorts of bath essentials — terry slippers, cashmere robes ...