Black zip-up long-sleeved undershirt, made of synthetic fiber. - Brand: Patagonia - Color: Black - Style: Zip-up - Material: Synthetic fiber - Features: Long sleeves Thank you for viewing. This is a Capilene 2 from about 5 years ago. I'm selling it to declutter. I wear it when hiking. I've used it a few times. I think the condition is still quite good, but I hope you understand.