Ultralight waterproof/breathable pullover. Pertex® Shield+ 3 layer laminate combines low weight, durability, breathability, and water protection. High-end construction (seams are 13 stich count vs the typical 8). Micro taped seams and waterproof ykk zippers. Patterned and articulated for a combination of weight savings and freedom of movement. Features include a weatherproof chest pocket designed to minimize movement during activities like running. Elasticized hem, hood, and cuffs. Cuffs can be pulled up on forearms for cooling. Reflective detail. Stuffs into its own chest pocket. Perfect condition. I'm not sure if this was ever worn. If so, not more than once or twice. Approximate measurements; 30" back of collar to hem 23" across chest under arms, which are gusseted. 21" lower on torso. Some reviews: https://gearinstitute.com/gear-review/montane-minimus-777-pull-on/ https://thebigoutside.com/review-montane-minimus-777-pull-on/