Goldwin - Pertex Equilibrium Wind Vest - Citronella YellowThis a cracking lightweight and packable wind vest for keeping off a chill during the warmer months. Made from PERTEX EQUILIBRIUM that's lightweight, windproof, breathable and comfortable to wear. PERTEX EQUILIBRIUM has a double weave structure of different densities on the front and back sides. The tightly woven front side has excellent durability and water repellency and the skin side has uneven surface that easily releases from the skin reducing