Much warmer than I expected for an item described as "lightweight"; but a great buy for under $20. It's more than warm enough for cold weather use (25F to 35F and up, depending on your internal furnace) without an additional jacket or sweatshirt. I am still looking, however, for comparable quality and durability but in a lighter Summer weight; we have lots of very warm Spring and Summer showers here in the foothills of Boulder, and I need something small, light, durable and compact to carry on outdoor walks that start sunny and end wet. This does the job, but I get uncomfortably warm in temps over 60F. The included mesh carry/storage bag is also an unexpected quality bonus.