Mens Terrex Ndosphere Flex Hooded Jacket II XL - Bright Yellow. PrimaloftĂ‚Â® gold insulation is the highest performing synthetic insulation on the market. Pertex quantumĂ‚Â® fine yarns, precisely woven to provide a very lightweight yet strong and durable fabric. Pack-it-pocket. Elastic hem and sleeves. Adjustable hood. For best protection and improved comfort. Center back length 29.5 inches. Bluesign Approved.