Wow, I didn't even notice the lack of zips in the picture or the description. I didn't have any trouble putting the tights on, though. It just means I won't be putting them on over my shoes (which would not probably happen).
They fit me much better than the Cannondale tights I had to exchange because of damage. I had to get a small in those instead of an x small. They were longer in the leg length and were a little snug in the hips, but they do have a cool wide waist band. The sizing just didn't seem to be in proportion to other brands I have. But, they were 15.00 and I like having more than one pair, as I wear them for stuff other than cycling.