This is an OMM Core+ Hoodie, size M. I purchased it about a year ago and used it once as a mid-layer, then stored it at home. It's in excellent condition with almost no pilling or shedding, but please refrain from purchasing if you are overly sensitive to such things. [From the manufacturer's website] The OMM Core series, which fully utilizes PRIMALOFT® ACTIVE fabric, is a new concept in active insulation products. By weaving synthetic fiber plumes into a knit mesh, it achieves warmth similar to fleece while weighing less than half of conventional products. When layered with a windproof shell, it becomes a highly efficient thermal wear. At the same time, it also boasts excellent breathability, allowing for immediate heat dissipation when it gets too hot. It's truly a reliable item that can cover you from the valley floor to the summit. The Core+ Hoodie is a thicker model of OMM's two Core fabrics, using 125g thickness. Its amazing moisture-wicking properties allow it to dry quickly even when wet, preventing your body from getting cold.