Altra Trail Sleeveless Shirt, Women's Small/Medium, Yellow NWT Pit to Pit = 16" Length = 20" I think this tank runs more on the fitted side, feels like a Small (IMO) but the tag is a Medium Description Looking to keep it light and fresh out there? This Trail Tank Top is ready to do just that. Made with a performance cotton hand-feel jersey knit, it’s breathable and comfortable. Add in some visibility with reflective logo detailing and a sleeveless cut so your shoulders can get kissed by the sun while you’re out exploring. This tank was made to tackle the terrain and give you the ultimate comfort and performance you’re looking for, on or off the trail.