This gently used and excellent condition layering piece is from Lululemon several years back and is ready for anew home! I’m a 4-6 in tops and this was a Size 6, although the tag has been removed. The sleeves are extra long with thumb holes. The length of the piece is 25 inches and it measure 15 inches across (both measurements taken flat). It’s super stretchy and would be excellent for layering when outdoor activity in cooler weather - maybe great for a run or a hike?!? Don’t hesitate to contact me with any questions!