Do these have the bumps on insole?

They do which surprised me be ause previous lite ride did not. I prefer the older ones. I have 2 black, navy and white, all without the bumps. I won't order anymore if that's how they are making them now.

How much do they weigh?

I just weighed a size 12 M and the pair wt was 1 1/2#

I normally wear a women’s size 6 1/2. Should I size down to a 6, or up to a 7? Some say these run large.

I was told to downsize as well so I bought two different pairs of Crocs, both size 7. One pair just barely fits, my heel is at the end of the shoe and the other pair fits loosely, almost feels too big. I wear socks with both and the ‘larger’ pair fit comfortably while the ‘smaller’ pair requires me to push my foot in a little more snugly. I recommend using Amazon’s shop that offers returns without purchasing to try them on. I can’t explain why the same size shoes feel different. Both pair are equally comfortable however. I love the roominess in the toes. I plan on keeping both pairs.