This shirt fits my need perfectly. I live in the desert and hike regularly which means hours of walking with little to no shade and the sun directly on you the whole time in 100+ degrees. So I need something that's (1) light weight so I can wear it in the heat, and (2) long sleeved with UPF so it offers sun protection. This fits the bill perfectly, I'm really happy that the shirt is extremely light weight and has a vent at the back so it's perfect for wearing in the heat, but still offers sun protection. Plus, it comes in different beautiful colors too so I'm not stuck with khaki and more khaki colored hiking clothes!

The only two things to note is that first, because it's so light weight, the fabric is very sheer, as in if I'm wearing a striped top underneath you can see the stripes clearly. And second, the fit is a tad odd. I'm 32DD and 28-29" waist, M has a slightly loose fit on me, but the arms fit a bit looser, but it looks good with the sleeves rolled up.