I will concur on the Shebeest Strada...I have the sleeveless version in 3 colors...I like it THAT much. The material is soft and stretchy and feels nice against the skin, has the nice zippered pocket in the back, and a 1/4 zip in the front. It's very comfortable.

Another option is the Shebeest Easy-V jersey. I also have this one in 3 colors. The fit is very relaxed (like a normal sleeveless top), there are no elastic/silicone hems, and this one has the single zippered pocket in the back as well. The material is slightly different than that of the Strada, but it's still a nice, comfortable jersey that doesn't fit like a normal snug-fitting jersey.

Here is a link to the Easy-V from the Sierra Trading Post site:

http://http://www.sierratradingpost.com/i/2848G,03,_Shebeest-Easy-V-Solid-Cycling-Jersey-S-Cut-UPF-50-Sleeveless-For-Women.html