Core Glide Block Jacket is a functional cross-country ski jacket made of a 3-layer wind- and waterproof VENTAIR fabric for training in cold conditions. PERFECT, EXCELLENT Condition- unused, clean Mens sz L This versatile jacket comes with elastic jersey at sides and under sleeves for optimal ventilation and body-temperature management. Combine with various mid-layer garments underneath to adjust to changing temperatures. VENTAIR represents the latest in cutting-edge fabric systems. It's a highly advanced system that offers water- and wind protection in combination 23" across chest, 27" length