Columbia WM6647 Ballistic Fleece Jacket Size M This is a Columbia global model softshell jacket. The entire fabric has 4-way stretch. There is ventilation under the arms. Compatible with the Interchange System. Selling because I purchased it but haven't had the opportunity to use it. Norrona Houdini Teton Bros OMM Helikon-Tex Montbell Columbia finetrack Patagonia Marmot Mammut Descente AIGLE Salomon The North Face Mystery Ranch Gregory Fjällräven Haglofs Montura Granite Gear Arc'teryx Black Diamond Snow Peak Jack Wolfskin CHUMS Outdoor Research Mountain Hardwear Helly Hansen Karrimor L.L.Bean Macpac Mountain Dacs Osprey Ortlieb Vaude