The Rat Pack didn't discover alpaca sweaters. That happened decades earlier, when legendary golfers like Bobby Jones and Walter Hagen wore them for their incredibly lightweight warmth. But Sinatra and his pals bought 'em by the dozens – alpaca suited their free-swinging lifestyle. Crosby and Como wore alpaca too, as they crooned on TV. So you may break into a few doobie doobie doos, when you slip into this Baby Alpaca Sweater Vest, knit in Peru with the classic links stitch for resiliency and comfort.