LOVE mine! they're cheap and cute cute cute!
I have thin wrists so I've kind of squeezed me a bit to tighten them up (doesn't work with the beaded ones because the wire is full of beads so it can't get smaller) and that will make them a little smaller, but the key is they're not huge to start with because they expand to put them on. You can tell from the website how they're made a wire that overlaps so you can spread to put on and it slides back together to be smaller. The beaded one I have has a thinner wire but the same concept--it does get larger to slip on if you need it to, but just can't be adjusted smaller since the beads would get in the way of that.
I have a photo that was to show off my watch that also has a few of the bangles (and a sliver james avery bracelet too) The ones pictured are "russian gold" which is like, brass, maybe? It looks like gold but maybe a little darker and the charms hanging off kind of oxidyze a little. . .making them antiqued a bit? (obviously for $12 plain and $21 with charm they're NOT real gold--ha! but it isn't like a gold-plate either it's just a golden-colored bronzy metal of some type. In other words after you play with them your fingers smell a little like metal--know what I mean?)
I only have russian gold ones now but I've ordered a few silver-toned ones to mix in.
I could take photo with all of mine if y'all want but they're all very similar--all the same color (right now) and the one beaded one is gold beads. They have some cute sets for sale on the website, but I just got mine at the bangle bar. (I have one with each of my 3 kids' initials and then a couple more with other dangly charms and several plain ones (even these come with tiny "tag" charms with their name on which makes them cuter than just plain wire).