I was trying to replace my medium, lined, melon-colored Columbia tank top which I love and completely worn through but can't bring myself to throw away. I use it to wear underneath other shirts. This top is a lined, breathable, polyester-elastane fabric and drapes more like a sleevless shirt than a tank top. It is rather long on me so it hangs out quite a bit if worn as an under shirt but with right colors maybe that will work. It is comfortable and cool. I like the quality and durability of Columbia stuff so I am keeping it and may brave going sleeveless.The color is a tad zingier than the picture online - more like a fluorescent mango. But the sizing! The size small was huge, especially around the hips. Really looked like a maternity top from the 80's. It is also very long, but that worked for me as I am 5'9", 130, size 4 or 6 in most clothing lines. Loved the little zip pocket hidden on the side seam. Short of taking it to a seamstress for alteration, it just did not work. And I couldn't justify the cost of alteration in addition to the original price. Columbia has a good idea here, they just need to tweak the pattern.Very lightweight shirt. Like the feel of the material (soft). Runs big, especially in the middle. I need a little more room there, so this is good for me, but I can't decide if it almost looks a bit too maternity.Love this top, I bought 2, fantastic quality and comfort, just beware they fit big so go down 1 size and you will be happy. Fabric is so nice and cool and wrinkle free.Great