I just got this bike and it's heavier than I had hoped. People said it was lightweight and I couldn't find the total weight of it anywhere. The shipping package in all was 44 lbs. So I think this bike is close to that of 40 lbs. It's not super heavy but it's not light either!
I just came from Dick's Sporting Goods checking out the "Serene Citi" and the "Serene" (there is also a 3rd "Serene ??" bike). The Citi is made of steel and quite a bit heavier than the aluminum Serene. The Citi will also rust if you scratch it because it's steel. I am waiting to find the Serene on sale. I mainly went to try out the sizes, Xsmall (13"), Small (15"), Med (17") & Large(?).