Barbour Nelson Essential Full Zip Knit in Seaweed. Adding a touch of classic elegance to your country wardrobe, the Barbour Nelson Essential Full-Zip Knit is meticulously crafted from 100% wool, featuring twisted yarns for a cozy feel. The relaxed fit, raglan sleeves, and zip-front closure make it perfect for layering under wax jackets and gilets, offering both style and functionality.