Thanks to the innovative notion of featherweight cashmere, this cold-weather knitwear staple has become a year-round fixture. One mine for these warm-weather sweaters is Italian cashmere purveyor Brunello Cucinelli, whose provincial-chic West Village outpost feels like a slice of the Umbrian countryside. Behold a bounty of earthy pieces in mouth-watering pops of tomato red, mint green, lavender and other shades that hew close to nature’s vine.