You may not have known from just looking at the Amazon.com description, but this shirt provides protection from the sun too!  I bought this shirt after seeing the same shirt on another website that specializes in sun protection clothing.  (Amazon sells it $2 cheaper).  That website says that the white color is UPF 20, the sky color is UPF 25, and black is UPF 50.  (An average white cotton T-shirt has a UPF of 5 and a black T-shirt is about UPF 25.)  Compared to the clothing that the other companies sell, this shirt is about 1/3 of the price as a typical UPF shirt and it is much more flattering than those frumpy styles.

The shirt itself is very plain, but for those who need the sun protection, it is designed very well.  It has a ribbed jersey collar that protects the base of the neck, and the sleeves are extra long to cover the backs of the hands.  It is stretchy and very fitted, however, and people who do not like fitted T-shirts should order one size larger.  I found it to be most snug around my upper arms, and I am a pretty petite, thin-boned person.

It's never a bad idea to have extra protection from harmful UVA and UVB rays from the sun.  I'm glad that these days there are companies like ECOnscious that are making clothing for sun-sensitive people more fashionable and affordable.