Vertx VaporCore 5 Crew SockMerino wool knit naturally resists odors and regulates temperature and moisture Heel and toe reinforcement provides cushion and durability Knit mesh top of foot adds ventilation Compression fit does not sag or stretch over time Not only does the Paratus Hoody blend into virtually every kind of landscape, it's comfortable and durable and doesn't signal your capabilities or readiness for action. The pullover style keeps things simple and eliminates